I was an good student in school

I studied daily , and I spent most of my breaks in the library including afterschool In the library. I frequently achieved high grades in science such as As or Bs. I had never been good at math exams but I were great in class , I just struggled with exams. My math teacher often told me how good I were but bad at remembering for exam. I did well in english too and I were an passing student in history , an A/B student in religous studies and in music I got C/B grades. Then one day , it all changed. I already struggled with my mental health from year 8 but in year 10 it got so bad despite me getting good grades. When the 6 week holiday started , I just crashed. I ended up in hospital and I couldnt go back to school. I got homeschooled but my tutors didnt teach me anything but times tables and made me copy word to word out of books , they wasnt really qualifed as such but were mainly there to help difficult students or ones with problems. I sat my exams in an private venue , I failed them all. I think I burnt myself out. I feel really sad because I know I could had passed if I hadnt struggled so much with my mental health. I deeply cared about my grades , I didnt fail through faults of my own. I resat my english at age 18 and passed but now Im trying to pass my maths. I spent 6 years working before I went back to college to study math. The reason behind this is because I were trying to make sure I were strong enough mentally to handle it.