Bertrand's Box Paradox

I wanted to create this simulation after seeing so many comments arguing about the answer in this tiktok, this way you can simulate the situation yourself and check the answer. 

Here's the TikTok:

https://www.tiktok.com/@mathletters/video/7113985039884438830

Voice and version of this problem by Math Letters (tiktok.com/@mathletters/) (mathletters.com)