Hi and welcome. We know exactly what you're going through. I was born in and pioneered at sixteen, I wish I'd gone to college instead. Well done insisting you go back to school.
All you can do is get an education and hang in there until you're financially independent and leave home. I know it's hard but that's all you can do.
Perhaps you could make up with your real dad to get him on side to let you go to football,