Try everything you find remotely interesting - you never know what will click.
Draw stick figure comics. Stories, jokes, whatever you like.
Create music (if you have an iPad or MacBook, Garage Band is free and excellent). There are lots of YouTube videos you can learn from.
Learn how to solder and repair electronics and appliances. It's a great skill to have and you can save money if you know how things work and can do even minor repairs.
Sewing! You can find vintage Singer sewing machines on Facebook Marketplace cheap or free (seriously, just because they're old doesn't mean they're worth $100). Read up on what to look for and how to maintain these machines (if they move, they can be repaired). Use this skill to make stuff or just to alter or repair the stuff you have.
Volunteer at an animal shelter! (Assuming you are okay with animals.)
Take up cooking or baking and try new recipes. Your parents might get into that.
As for gamedev, that's something I don't do, but again, there are all sorts of resources online you can use to hone your skills, get new ideas, and realise your vision. Working on your own projects might be more fulfilling than working for a game company, just with how devs are treated in the industry.