Hi
@QKD5 and welcome!
Could you tell us a little about your background? Do you like working with code, making content, doing artwork, etc?
Getting the code working is a good step, after that you could check out the
list of contributor friendly issues on GitHub and see if any of them stick out to you as doable. That's what those issues are marked for, beginner friendly in some fashion, although at varying difficulties depending on what you're used to
For instance
#1198 is an easy tweak to how the "Back" button aligns in places. Or
#1144 is about adding more individual options to the graphic settings. Or #520 which would be adding a new label in a corner of the main menu holding the game data directory.
As a general hint "Search" in code is your friend! Usually you can find whatever code relates to something with a few quick searches