Отправить push-уведомление из студии Java Android

Я вызываю sendToToken ("токен") с действительным токеном моего устройства, и он не работает, я не понимаю, чего мне не хватает, не выходит из строя, я отлаживаю, отправляю его правильно, но уведомление просто не появляется на целевом устройстве, на котором установлено мое приложение .

Что мне не хватает, может ли кто-нибудь помочь мне разобраться? Я и мой партнер боролись с этим в течение нескольких недель

MyFirebaseMessagingService.java

package com.example.intercambiolibros.fragments;

import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.graphics.BitmapFactory;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Build;
import android.util.Log;

import androidx.core.app.NotificationCompat;
import androidx.core.app.NotificationManagerCompat;

import com.google.firebase.messaging.FirebaseMessagingService;
import com.google.firebase.messaging.RemoteMessage;

import org.json.JSONException;
import org.json.JSONObject;

public class MyFirebaseMessagingService extends FirebaseMessagingService {

    @Override
    public void onMessageReceived(RemoteMessage message) {
        super.onMessageReceived(message);
        NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, "channel_id")
                .setContentTitle(message.getNotification().getTitle())
                .setContentText(message.getNotification().getBody())
                .setPriority(NotificationCompat.PRIORITY_DEFAULT)
                .setStyle(new NotificationCompat.BigTextStyle())
                .setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))
                .setAutoCancel(true);

        NotificationManager notificationManager =
                (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

        notificationManager.notify(0, notificationBuilder.build());
    }
}

класс, куда я отправляю уведомления:

package com.example.intercambiolibros.fragments;


import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.content.ContextCompat;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import com.example.intercambiolibros.R;
import com.example.intercambiolibros.activitys.LoginActivity;
import com.example.intercambiolibros.models.Libros;
import com.example.intercambiolibros.support.Constantes;
import com.example.intercambiolibros.support.conversaciones.Conversacion;
import com.example.intercambiolibros.support.mensajes.MensajeEnviar;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.Query;
import com.google.firebase.database.ServerValue;
import com.google.firebase.database.ValueEventListener;
import com.google.firebase.messaging.FirebaseMessaging;
import com.google.firebase.messaging.*;


import org.ocpsoft.prettytime.PrettyTime;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Objects;


public class LibrosInicioShow extends Fragment {
    private RecyclerView recyclerView;
    private BookAdapter bookAdapter;

    private EditText searchEditText;
    private List<Libros> bookList;

    private List<Libros> allBooks;


    public String getMode() {
        return mode;
    }

    public void setMode(String mode) {
        this.mode = mode;
    }

    private String mode = "";

    private DatabaseReference databaseReference;


    private void setFCMToken() {
        FirebaseDatabase database = FirebaseDatabase.getInstance();
        DatabaseReference usersRef = database.getReference("users");
        String userId = FirebaseAuth.getInstance().getCurrentUser().getUid();

// Get the device token for the current user
        FirebaseMessaging.getInstance().getToken()
                .addOnCompleteListener(new OnCompleteListener<String>() {
                    @Override
                    public void onComplete(@NonNull Task<String> task) {
                        if (!task.isSuccessful()) {
                            Log.w("FCM", "Fetching FCM registration token failed", task.getException());

                        }

                        // Get the device token from the task result
                        String token = task.getResult();

                        // Save the device token to the database for the current user
                        usersRef.child(userId).child("deviceToken").setValue(token);

                    }
                });

    }
    private RemoteMessage getMessage() {
        final HashMap<String, String> map = new HashMap<>();
        map.put("message", "From DesertSync");
        map.put("xfrom", "Prueba");

        return new RemoteMessage.Builder("internal").setData(map).build();
    }

    public void sendToToken(String token) {
        // [START send_to_token]
        // This registration token comes from the client FCM SDKs.



        FirebaseMessaging.getInstance().send(
                new RemoteMessage.Builder(token + "@gcm.googleapis.com")
                        .setMessageId("" + System.currentTimeMillis())
                        .addData("msg", "ping")
                        .addData("ts", "" + System.currentTimeMillis())
                        .build());
        // Response is a message ID string.
        // [END send_to_token]
    }

Модуль Build.gradle: приложение

  plugins {
    id 'com.android.application'
    id 'com.google.gms.google-services'

}


android {
    namespace 'com.example.intercambiolibros'
    compileSdk 32

    defaultConfig {
        applicationId "com.example.intercambiolibros"
        minSdk 21
        targetSdk 32
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

dependencies {

    implementation platform('com.google.firebase:firebase-bom:31.1.0')
    implementation 'com.google.firebase:firebase-messaging:23.1.2'
    implementation 'com.google.firebase:firebase-messaging'
    implementation 'com.google.firebase:firebase-analytics'
    implementation 'com.google.firebase:firebase-analytics'
    implementation 'androidx.appcompat:appcompat:1.5.1'
    implementation 'com.google.android.material:material:1.7.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
//   implementation 'com.android.support:support-annotations:28.0.0' mala
    implementation 'com.google.firebase:firebase-auth:21.1.0'
    implementation 'com.google.firebase:firebase-database:20.1.0'
//
    implementation 'com.google.firebase:firebase-analytics:21.2.0'
    implementation 'com.google.firebase:firebase-common-ktx:20.2.0'
//    //implementation 'com.google.firebase:firebase-common-ktx:20.2.0'

//
    implementation 'com.firebaseui:firebase-ui-database:8.0.2'


    implementation 'de.hdodenhof:circleimageview:3.1.0'

    implementation "com.github.bumptech.glide:glide:4.13.0"
    implementation 'com.google.firebase:firebase-storage:20.1.0'
    implementation 'androidx.recyclerview:recyclerview:1.2.1'
    implementation 'com.google.firebase:firebase-messaging:23.1.0'

    implementation 'org.ocpsoft.prettytime:prettytime:5.0.4.Final'
    implementation 'com.google.firebase:firebase-firestore:24.5.0'
    implementation 'com.google.android.gms:play-services-nearby:18.0.2'

}

проект build.gradle

  buildscript {

    dependencies {
        classpath 'com.google.gms:google-services:4.3.14'
        repositories {
            google()
            mavenCentral()

            dependencies {

                // Add the dependency for the Google services Gradle plugin
                classpath 'com.google.gms:google-services:4.3.14'

            }

        }
    }
}// Top-level build file where you can add configuration options common to all sub-projects/modules.
plugins {
    id 'com.android.application' version '7.4.0' apply false
    id 'com.android.library' version '7.4.0' apply false



}

AndroidManifest.xml

  <?xml version = "1.0" encoding = "utf-8"?>
<manifest xmlns:android = "http://schemas.android.com/apk/res/android"
    xmlns:tools = "http://schemas.android.com/tools">
    <uses-permission android:name = "android.permission.INTERNET" />
    <uses-permission android:name = "android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name = "android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name = "android.permission.POST_NOTIFICATIONS"/>
    <application
        android:usesCleartextTraffic = "true"

        android:name = ".support.ColorDinamico"
        android:allowBackup = "true"
        android:dataExtractionRules = "@xml/data_extraction_rules"
        android:fullBackupContent = "@xml/backup_rules"
        android:icon = "@mipmap/ic_launcher"
        android:label = "@string/app_name"
        android:roundIcon = "@mipmap/ic_launcher"
        android:supportsRtl = "true"
        android:theme = "@style/Theme.IntercambioLibros"
        tools:targetApi = "33">



        <activity android:name = ".activitys.DashBoardActivity" />
        <activity android:name = ".activitys.LoginActivity" />
        <activity android:name = ".activitys.registro_activity" />
        <activity
            android:name = ".activitys.SplashActivity"
            android:exported = "true">
            <intent-filter>
                <action android:name = "android.intent.action.MAIN" />

                <category android:name = "android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <service android:name = ".support.MyFirebaseMessagingService2"
            android:exported = "true">
            <intent-filter>
                <action android:name = "com.google.firebase.MESSAGING_EVENT" />
            </intent-filter>
        </service>
    </application>

</manifest>