Write a basic game, best case with 3d or collision detection and sound. You'll learn a lot of cool stuff while having a fun time :-) I'd suggest C# / Godot or

Write a basic game, best case with 3d or collision detection and sound. You'll learn a lot of cool stuff while having a fun time :-) I'd suggest C# / Godot or if you are tied to JS, pixii should also work.