

I just recently graduated with a CS bachelors. Honestly I didn’t learn too much in college either. Most stuff that was taught in college was stuff I already knew from learning Java on my own so I could make Minecraft mods as a tween.
I wish that modern and widely used frameworks, libraries, etc were something that were taught at college but unfortunately you have to teach yourself this stuff. Right now I am working on and nearly finished with a Spring Boot + React project to add to my portfolio and I had to teach myself both of those. Whatever it is you want to learn, there should be docs and plenty of tutorials out there for it.
Imo when making a game, you should make something that satisfies you. Chances are if you like something then there are other people who like it too. And if it turns out the game isn’t as successful as you hoped, then at the very least, you have something that you enjoyed making.