Hello Aspirant,

According to the percentile you have mentioned your ST rank is expected to be around 2500-3500 and on such ranking you have good chances to get some NITs.

If we go through previous year's data of seat allotment On the basis of data mentioned in the question by you, you can go for the enlisted colleges :-

Dr. B R Ambedkar National Institute of Technology, Jalandhar

Malaviya National Institute of Technology Jaipur

Motilal Nehru National Institute of Technology Allahabad

Maulana Azad National Institute of Technology Bhopal

And some more. You can check out previous year's cut-offs from the official website of JOSAA as given below :-

https://josaa.nic.in/Counseling/seatallotmentresult/currentorcr.aspx

Note that the above list is merely a prediction which has been made on the basis of latest cut-offs available on official website of either JOSAA or CSAB and the cut-offs are bound to change every year depending upon various factors such as the number of candidates appearing in an examination, the number of candidates qualifying an examination, difficulty level of the paper, and so on.

So you can use JEE-Main College Predictor to predict your chances of admission in different engineering colleges of India on the basis of your JEE-Main 2021 result :-

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

For your reference, you can check out the link given below to have better idea :-

https://engineering.careers360.com/articles/jee-main-cutoff-for-top-nits

You can also check out the JEE-Main knockout package for preparation of JEE-Main 2022 from the link given below :-

https://learn.careers360.com/jee-main-coaching/?utm_source=%20QnA

I hope this information helps you.

Good Luck for your future!!