python file with tkinter only works if I run it from Code editor

I have a small programm with tkinter. If I open it in the standard-python-code-editor and press F5 it works and I don't get any error messages. If I double-click the main.py file it just opens a console window that immediately closes itself. I've tried putting os.system("pause") at the end but it didn't change anything.

import tkinter as tk
import pytube
import os
from pathlib import Path
from PIL import ImageTk, Image

root = tk.Tk()

root.title("YouTube Downloader")
root.geometry("450x250")#standard size
root.minsize(width=450,height=250)#minimal size
root.maxsize(width=450,height=250)#max size

URL_label = tk.Label(root,text="URL: ")
URL_label.place(x=20,y=10)#bei 20x10y platziert

def To_MP3():
    try:
        destination = str(Path.home() / "Downloads")
        URL = pytube.YouTube(input_url.get())
        video = URL.streams.filter(only_audio=True).first()
        out_file = video.download(output_path=destination)
        base, ext = os.path.splitext(out_file)
        new_file = base + '.mp3'
        os.rename(out_file, new_file)
    except:
        input_url.delete(0,4096)
        input_url.insert(0,"Not a valid URL")


def To_MP4():
    try:
        downloads_path = str(Path.home() / "Downloads")
        URL = input_url.get()
        YT = pytube.YouTube(URL)
        vid = YT.streams.get_highest_resolution()
        vid.download(downloads_path)
    except:
        input_url.delete(0,4096)
        input_url.insert(0,"Not a valid URL")    
    
mp3_button = tk.Button(root, text="Convert to MP3", command = To_MP3)
mp3_button.place(x=54,y=40)

mp4_button = tk.Button(root, text="Convert to MP4", command = To_MP4)
mp4_button.place(x=150,y=40)

input_url = tk.Entry(root, width = 50, bg="lightgray")
input_url.place(x=55, y=12)
input_url.focus()

img = ImageTk.PhotoImage(Image.open(os.path.join("assets","Image.png")))
panel = tk.Label(root, image = img)
panel.place(x=20,y=100)

mp3_img = ImageTk.PhotoImage(Image.open(os.path.join("assets","mp3.png")))
mp4_img = ImageTk.PhotoImage(Image.open(os.path.join("assets","mp4.png")))
img_3 = tk.Label(root, image = mp3_img)
img_4 = tk.Label(root, image = mp4_img)
img_3.place(x=250,y=108)
img_4.place(x=340,y=108)

def on_enter(e):
    mp4_button['background'] = "#a595f5"
def on_leave(e):
    mp4_button['background'] = 'SystemButtonFace'
mp4_button.bind("<Enter>", on_enter)
mp4_button.bind("<Leave>", on_leave)

def on_enter_(e):
    mp3_button['background'] = "#a595f5"
def on_leave_(e):
    mp3_button['background'] = 'SystemButtonFace'
mp3_button.bind("<Enter>", on_enter_)
mp3_button.bind("<Leave>", on_leave_)

root.mainloop