The purpose of prerequisites is not to provide you with classes that interest you. The purpose is to make sure that you have a strong foundation before moving ahead. Your up and down performance suggests that you are plenty smart and capable but have weak prep in core areas.
Why not let your guidance counselor take the lead here?? Self studying is not a substitute for a comprehensive and rigorous HS prep…
You may not be interested in bio…but every prospective math or stem student will need to master the core components of a scientific education before advancing…bio, chem, physics with labs, and solid performance in advanced statistics and calculus. Your prep seems all over the place…