As you got 143 in 2021,i think your concepts are week so workout on them asap.
U can make use of resources available on the net. I will recommend you to take pw subscription as it costs less than 5k. I myself used it in my drop year and I’m getting 623 marks..
once done with the syllabus, write as many mock tests you can do in real exam-like format. It will help to manage time well.
Slowly u will see your marks increasing. Dm me if u need any help I will be very happy to help 😊
All the best make this your year!