Anyone else suffering with this problem?

I am a pure science student who didn't choose maths because I wanted to study without worrying about something I am not good at which led me to a huge wall when it came to collages and courses. I never really wanted to be a doctor yet I wanted to give neet a try. I didn't give it much effort and studied as much as I could in the short time. When i finished the exam and checked my answers it was just 390. I wasn't too sad about it or anything but I am lost in what to do. From 11th grade all i actually wanted to study was IISER. But this year more competition has risen due to neet and jee aspirants finding about IISER. IISER was actually niche but due to some people online it got popular. I am starting to hit a wall wherever I turn. The only subject I am good at is biology and right now there seems to be no scope. Can u guys suggest smth?