Do you really want to live in a dorm, or would you only do it if you have to? If you live near any good universities, you might consider applying to them (maybe as safety schools, since you seem to only have reaches in mind) because you could commute. I’m a commuter student because I happen to live close to the most prestigious college I could get into and afford, but I’ve realized that I probably wouldn’t have liked living in a dorm because I want to be completely alone sometimes and it’s hard to do that with a roommate.
If you hate introductory classes, I would also recommend looking at schools that would give you credit for AP and/or dual-enrollment classes. Another option is to start at a community college and then transfer—I think the environment at CCs is good for introverts because the students don’t care as much about socializing. This won’t work for everyone because community colleges have really limited course options, but it works for some people.