python3.8 在tkinter中写了quit不退出，怎么办？

Question

在tkinter中写了quit不退出，怎么办？

详见代码第102行，wait函数下

由于想给自己孩子写个能定时锁屏的软件，就制作起来，结果遇到了不退出的bug，还请各位大佬看一下，指出错误，在此提前致谢

注：注释掉的部分是以后的功能

相关代码

# -*- coding:utf-8 -*-
import ctypes
import os
import threading
import time
import tkinter as tk
from subprocess import run
from plyer import notification

from PIL import Image, ImageTk
from win10toast import ToastNotifier

#whnd = ctypes.windll.kernel32.GetConsoleWindow()
# if whnd != 0:
#    ctypes.windll.user32.ShowWindow(whnd, 0)
#    ctypes.windll.kernel32.CloseHandle(whnd)


class Application(tk.Tk):
    def __init__(self):
        super().__init__()
        self.bit_Lock = True
        self.bit_inform = True
        self.bit_pop_up = True
        self.Locking_time = 10
        self.wm_attributes('-topmost', True)
        self.toaster = ToastNotifier()
        # self.protocol("WM_DELETE_WINDOW",self.no_closing)

        if os.path.exists('D:/GQC/ALdata'):
            with open('D:/GQC/ALdata', 'r') as f:
                self.Lock_time = int(f.readlines()[0].replace("\n", ""))
        else:
            with open('D:/GQC/ALdata', 'a+') as f:
                f.write("60")
            self.Lock_time = 60
        self.Lock_time = 10

        #self.l = tk.StringVar()
        #self.lbl_Lock_time = tk.Label(self,textvariable=self.l,font=(None,50))
        # self.overrideredirect(True)
        while self.bit_Lock:
            # self.l.set(str(self.Lock_time)+"秒后锁屏")
            # self.lbl_Lock_time.pack(fill=tk.X)
            # self.update()
            if self.Lock_time == 0:
                self.overrideredirect(False)
                self.Lock()
                self.Lock_time = 10
            if self.bit_inform:
                if self.Lock_time == 300:self.Notify_time("五分钟")
                if self.Lock_time == 120:self.Notify_time("两分钟")
                if self.Lock_time == 60:self.Notify_time("一分钟")
                if self.Lock_time == 30:self.Notify_time("30秒")
                if self.Lock_time == 10:self.Notify_time("10秒")
            self.Lock_time -= 1
            print("锁屏倒计时", self.Lock_time)
            time.sleep(1)
    def Notify_time(self,time):
        notification.notify(
                            title="自动锁屏通知", 
                            message=f"您当前使用的电脑即将锁屏，剩余时间小于"+time+"，请尽快保存未保存的工作，避免数据丢失", 
                            app_icon=os.path.join(os.path.abspath('.'),'images','ring.ico'),
                            timeout=10)
    def Lock_windows(self):

        self.frame = tk.Frame(self, bg="LightGrey")
        # self.attributes('-fullscreen',True)

        self.v = tk.StringVar()

        #img_open = Image.open(os.path.join(os.path.abspath('.'),'images','wallpaper.jpg'))
        # img=ImageTk.PhotoImage(img_open)

        self.lbl_time = tk.Label(self, textvariable=self.v, font=(
            "微软雅黑", 100), anchor=tk.N, fg='DeepSkyBlue')  # DodgerBlue ,image=img,compound=tk.CENTER
        self.lbl_time.pack(fill=tk.X)

        self.frame.pack(fill="both", expand=True)
        while self.Lock_bool:
            self.v.set(str(self.x)+"秒后解除锁屏")
            self.lbl_time.pack()
            self.update()

        # self.attributes('-fullscreen',False)
        self.v.set("解除锁屏")
        self.lbl_time.pack()
        self.update()

    def no_closing(self):
        pass

    def close_explorer(self):
        run('taskkill /F /IM explorer.exe')

    def wait(self):
        for self.x in range(self.Locking_time, 0, -1):
            time.sleep(1)
            print("恢复倒计时", self.x)
        self.Lock_bool = False
        time.sleep(1)
        self.quit()
        os.system('start explorer.exe')
        print("已恢复")
        time.sleep(5)

    def Lock(self):
        self.Lock_bool = True
        t1 = threading.Thread(target=self.wait)
        t1.start()
        self.close_explorer()
        self.Lock_windows()
        t1.join()


app = Application()
app.mainloop()

我想让它等待10秒后退出，结果却无法退出窗体，能帮我看一下错在哪里了吗？，再次致谢