I genuinely dont enjoy my life for the first time ever

so im a 15 sophmore and have had a great life so far, but i feel that being at school and just doing things i dont enjoy for 6.5 hours of my day plus sports and other extracurricular activities is taking up all my time so i dont have any free time. and doing something i hate for most of my week is deteriorating my mental health, what do i do?