Is it possible to get accepted into every college you apply for?

It's possible. It just matters where you apply and how fit you are to get accepted there. You should apply to a range of schools. Safety schools, where it's most likely that you'll be accepted, the schools in the middle, where they're your best fit and your favorites, and reach schools, where they can be your favorites but you're not sure if you can get in; the standards are a bit higher as well as their averages.