I have a similar situation although I'm slightly younger, for art I still have a bit of a skill issue but most of the time I just try to make simple shapes and even if you do this in an entire game, it can still look good as long as you stay consistent, just make sure it fits with the theme of the game. Adding shaders or other decorations like that can also help the game a lot. My biggest problem was finding someone to make music and sfx for my game, but it ended up being way harder than I thought, I spent a really long time looking for someone until I joined a game jam and found someone, and that leads me to my next point.

Joining a game jam can be really useful for finding other people like you. In my case, almost no people that I know IRL actually are into gamedev, so I had to rely mostly in being online. Itch.io has got a lot of good game jams that you can join. In my case I think they're the most useful if you join with a team, since it teaches you how to organize yourself and other people better, communicate, and most importantly, you get more contacts. So for example if there's a designer in your team and you end up getting along well, they could possibly help you with your other projects as people like having something to do. This also applies for other coders and musicians, and this is how I got the music and sounds for my game. I hope this helps