as a solo dev myself, i think that making games alone have some benefits. You get to do mostly what you like, you find ways to make boring tasks less boring, you can end up becoming very good at something, and there is always AI to help you learning and bug fixing.
One thing that a school project made me notice is that if you try to make a group of people that don't know to make games do some project, it will have the same fate as a project from a solo person that don't know how to make games - bceome a big pile of assets that doesn't work at all. So you should join a group of people only after you start to know what are you doing, otherwise lol