To be honest - nothing, really.
You have, essentially, maxxed-out all of the possible ways that you can increase your chances to be accepted to colleges with low acceptance rates. Well, winning a Very Prestigious Award would have helped, but the stars didn’t align for you in that way.
The only thing you can do is to finish strong, and make sure that your first semester of your senior year looks the same. Have somebody help you put together an application that highlights your strengths, make sure that your counselor writes you a very good letter, and write the best essay that you can.
However, the absolutely most important thing for you to think about is this:
This should be your primary focus. If your parents cannot or will not pay for your college, and they are making enough that you will require parental contribution, you are not going to attend any of the “prestigious” colleges that you are thinking of.
End of story.
If you are required to pay anything that is more than a couple thousand dollars above the amount of Federal Loan, the only colleges that you will be able to attend are those which will give you a merit-based full ride. None of these colleges that you are asking about will do that.
So your entire focus should be on what colleges you will be able to attend for free, using on merit-based scholarships.