Beyond learning basic terms and positions on youtube it would be impossible to become a professional. Having a qualified teacher and the right facilities and tons of time,practice, performance are key! I’d find the nearest professional company that has a school go there and chat with the teachers see if there are any scholarships available to help you out!! You can try to find a part time job to pay for classes too! If you just want to do ballet at a rec level again go find a ballet school in your area and talk to the teachers see if they can help you out!! Best of luck!!