I personally think this is a nice project and an interesting idea (despite it having been done before many times)
Here's a few things you could potentially add:

• Icon Kit (feels a bit jarring to have your icon randomized every time you enter a level)
• Search Menu that can be opened from the search button (could just have the ID input and a button that plays the level)

Here's some issues i've been having. I'm using Wine in Ubuntu 24.04 if that helps.

• Search feature does not work. At all. I type in the ID, hit the search button and it does nothing. (Link, because you can't embed videos on GitHub: https://drive.google.com/file/d/1_oRuSZUPTWDj1siCzZfFC9bQtQJ1NLgz/view?usp=sharing
• While scrolling on the Main Levels screen by dragging pages with your mouse, you can stop inbetween pages and it just stays there until you move again.