Hey There, Your Percentile is very low for getting admission in NITs because taking admission at NITs require very high percentage.

But You also belong to ST category and that will be very much helpful for you. Getting CSE might be difficult for you but you can still get good branches at NITs.

I will recommend you to check All The Colleges, That is available for You on basis of your rankings and Reservation, Then You can also check that at Our JEE MAINS COLLEGE Predictor. That will be very helpful for You. And Then You can easily compare good colleges and choose which one will be best for you.

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

ALL THE BEST :)