Hello Aspirant,

Don't worry if you are disqualified in JEE-Advance because you have very decent category rank in JEE-Main and on such rank you can get food NITs with top branches like CSE or IT or ECE and likewise but as you have not mentioned the category so it is quite difficult to help you with the exact list of colleges.

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

Dr. B R Ambedkar National Institute of Technology, Jalandhar

Maulana Azad National Institute of Technology Bhopal

Motilal Nehru National Institute of Technology Allahabad

National Institute of Technology Calicut

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/Result/Result/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

I hope this information helps you.

Good Luck for your future!!