I'm so sorry you did not make it this time. It is hard, starting so late to break in I think, the others have been doing/practicing it for so long. Do you watch the Dallas cheerleaders show?
Dallas Cowboys Cheerleaders: Making the Team (TV Series) | Season 10 Episodes | CMT That might have some ideas for you on what to do/how to improve. I admire your physical energy, I don't have any of that anymore. Senior year might be your last chance for your school team but perhaps there are other places you can work to get into (like local sports teams, college, etc.). It has to be hard to get all the pieces working at once. Watching the Dallas shows, just how high they can kick can mean they don't make it! And being on the team does not get you anything, makes it harder because there are people like you coming up that are good and if you have a bad day you can be replaced. It's very competitive I think, everywhere with many more trying out than can get in so it's the little things that can mean not getting in on any one tryout. But I would keep trying until you make a team! If it's a dream, eventually it will come true if you keep working for it -- it's just like any other thing you have to work for.