I made a game about guess numbers. After repeated attempts, I still couldn’t change a problem.
The code is as follows:

#

#
import tkinter
import random
import pygame

#
pygame.init()

#
root = tkinter.Tk()

#
bg = tkinter.Canvas(root, width=1000, height=750)
bg.pack()
bg_p = tkinter.PhotoImage(file="bg.png")
bg.create_image(500, 375, image=bg_p)

#
bgm = pygame.mixer.Sound("bgm.mp3")
bgm.play(-1)

#
low = 0
high = 101

#
random.randrange(low, high)

#
def onclick():

    #
    global low, high

    #
    guess = int(input("Guess a number: "))

    #
    if guess == answer:

        #
        bg = tkinter.Canvas(root, width=1000, height=750)
        bg.pack()
        bg_p = tkinter.PhotoImage(file="bingo.png")
        bg.create_image(500, 375, image=bg_p)

        #
        low = guess
        high = guess

        #
        bingo = pygame.mixer.Sound("bingo.mp3")
        bingo.play(0)

    #
    elif guess > answer:

        #
        bg = tkinter.Canvas(root, width=1000, height=750)
        bg.pack()
        bg_p = tkinter.PhotoImage(file="too_high.png")
        bg.create_image(500, 375, image=bg_p)

        #
        high = guess

        #
        lol = pygame.mixer.Sound("lol.mp3")
        lol.play(0)

    #
    else:

        #
        bg = tkinter.Canvas(root, width=1000, height=750)
        bg.pack()
        bg_p = tkinter.PhotoImage(file="too_low.png")
        bg.create_image(500, 375, image=bg_p)

        #
        low = guess

        #
        lol = pygame.mixer.Sound("lol.mp3")
        lol.play(0)

#
while True:

    #
    for event in pygame.event.get():

        #
        if event.type == pygame.QUIT:

            #
            pygame.quit()
            exit()

        #
        if event.type == pygame.MOUSEBUTTONDOWN:

            #
            onclick()

    #
    try:

        #
        l1.destroy()
        l2.destroy()
    
    #
    except:

        #
        pass

    #
    finally:

        #
        l1 = tkinter.Label(root, text=str(low), font=("Arial", 60), bg="white")
        l1.place(x=280, y=570)
        l2 = tkinter.Label(root, text=str(high), font=("Arial", 60), bg="white")
        l2.place(x=630, y=570)

    #
    root.mainloop()  

After executing the program, _tkinter.TclError: can’t invoke “label” command: application has been destroyed is returned.
No matter where I put mainloop() it doesn’t work.
Why?

I put mainloop() on everywhere, but it still doesn’t work.