How to get 92% above in 10th??

I just came in 10th std and the thing is... I HAVE LOST ALL CONFIDENCE. like the downfall from 8th to 9th was horrible. I dropped from holy 90% in 8th to 76% in 9th.

Now most of my relatives and teachers say that I will get 86% in boards MAX.

Wanna change that thing and get like above 92 but the thing is that-

1. I got ZERO motivation.

2. I don't go to classes or any extra tuition.

3. I am being overwhelmed by Soo many resources because I don't know what to refer and what not to refer.

4. kinda stuck with how to study better and score better marks.

5. I have pdfs and pyqs and EVERYTHING but I just don't know which books to refer. Like educart or oswal.

I really need help from sum 90% above people who got it without CLASSES and how much did y'all study and what ONLY THINGS did y'all refer.

Get in some motivation too 😭😭