Я не могу писать в текстовом виджете Tkinter

Я пытаюсь сделать графический интерфейс с кнопками для отправки ежедневных отчетов персонала. Я зашел довольно далеко, но теперь я полностью застрял, я могу создавать кнопки и все остальное, но я не могу заставить его писать в текстовый виджет Tkinter. вот сценарий -

from tkinter import*
import random
import time;
import sys

root = Tk()
root.geometry("1600x800+0+0")
root.title("Report system")

text_Input = StringVar()
ADD = "0"


Tops = Frame(root, width = 1600,height = 700, relief=SUNKEN)
Tops.pack(side=TOP)

f1 = Frame(root, width = 650,height = 700, relief=SUNKEN)
f1.pack(side=RIGHT)

f2 = Frame(root, width = 950,height = 700, relief=SUNKEN)
f2.pack(side=LEFT)
#======================Time==================================================
localtime=time.asctime(time.localtime(time.time()))
#============================Info============================================
TitleH = Label(Tops, font=('arial', 60, 'bold'),text = "COMPANY",     fg = "blue4",bd=10, anchor='w')
TitleH.configure(background = "powder blue")
TitleH.grid(row=0, column=0)
TitleT = Label(Tops, font=('arial', 60, 'bold'),text=localtime,         fg = "blue4",bd=10, anchor='w')
TitleT.configure(background = "powder blue")
TitleT.grid(row=1, column=0)
#==========================Buttondef=======================
def btnClick(PrimeOperator):
    global operator
    operator = str(PrimeOperator)
    text_Input.set(PrimeOperator)

textDisplay = Entry(f2, font=('arial', 20, 'bold'), textvariable=text_Input,         bd=30, insertwidth=4,
                   bg = "powder blue", justify='center')
textDisplay.grid(columnspan=4)
#============================text===========================================

statusDisplay = Text(f1, font=('arial', 20, 'bold'), bd=60, width = 30,     height = 10,
                   bg = "powder blue")
statusDisplay.grid(columnspan=4)

btnadd=Button(f2,padx=16,pady=16,bd=8, fg = "black", font=("arial",20,'bold'),
          text = "add", bg = "powder blue", command=lambda:     statusDisplay.insert(INSERT, 'text_input').grid(row=4,column=2))

#===================OPERATOR=================================
btnop19=Button(f2,padx=16,pady=16,bd=8, fg = "black", font=    ("arial",20,'bold'),
              text = "OpTH19", bg = "powder blue", command=lambda:     btnClick("OpTH19")).grid(row=2,column=0)

btnop18=Button(f2,padx=16,pady=16,bd=8, fg = "black", font=("arial",20,'bold'),
              text = "OpTH18", bg = "powder blue", command=lambda:     
btnClick("OpTH18")).grid(row=2,column=1)

btnop8=Button(f2,padx=16,pady=16,bd=8, fg = "black", font=("arial",20,'bold'),
          text = "OpTH08", bg = "powder blue", command=lambda:     
btnClick("OpTH8")).grid(row=2,column=2)

btnop7=Button(f2,padx=16,pady=16,bd=8, fg = "black", font=("arial",20,'bold'),
          text = "OpTH07", bg = "powder blue", command=lambda:         
btnClick("OpTH7")).grid(row=3,column=0)

btnop5=Button(f2,padx=16,pady=16,bd=8, fg = "black", font=("arial",20,'bold'),
              text = "OpTH05", bg = "powder blue", command=lambda:     
btnClick("OpTH5")).grid(row=3,column=1)

btnop4=Button(f2,padx=16,pady=16,bd=8, fg = "black", font=("arial",20,'bold'),
              text = "OpTH04", bg = "powder blue", command=lambda:     
btnClick("OpTH4")).grid(row=3,column=2)

btnop3=Button(f2,padx=16,pady=16,bd=8, fg = "black", font=("arial",20,'bold'),
              text = "OpTH03", bg = "powder blue", command=lambda:     btnClick("OpTH3")).grid(row=4,column=1)

#=================================status======================================
btnontime=Button(f2,padx=16,pady=16,bd=8, fg = "black", font=    ("arial",20,'bold'),
              text = "On time", bg = "powder blue", command=lambda: btnClick("On     Time")).grid(row=2,column=3)
btnlate=Button(f2,padx=16,pady=16,bd=8, fg = "black", font=("arial",20,'bold'),
              text = "Is Late", bg = "powder blue", command=lambda:     btnClick("Late")).grid(row=3,column=3)
btnonleave=Button(f2,padx=16,pady=16,bd=8, fg = "black", font=    ("arial",20,'bold'),
                  text = "On leave", bg = "powder blue", command=lambda:         btnClick("On leave")).grid(row=4,column=3)
#=================================Print=======================================
btnadd=Button(f2,padx=16,pady=16,bd=8, fg = "black", font=("arial",20,'bold'),
              text = "add", bg = "powder blue", 
command='C').grid(row=4,column=2)


root.mainloop()

Итак, в основном я сначала нажимаю ontime, затем я хочу нажать на добавление, чтобы оно добавляло ontime в левую часть, которая является текстом Tkinter. Затем я нажимаю на оп, которая приходит вовремя, и нажимаю добавить для каждой операции. Итак, я хочу, чтобы это выглядело так:

ontime opth3 opth4 и т. д. и т. д.