Hello there,
You haven't mentioned your home state and the branch you want to choose. Analysing the previous year data, it is a little difficult for you to get good NITs. Don't worry, you can get many other good private colleges.

You can check the cut-off rank of all the NITs from the link given below:
https://www.google.com/amp/s/engineering.careers360.com/articles/nits-cutoff-for-top-btech-branches/amp

Also note that the cut-off rank changes every year depending on the difficulty of the paper, and the number of candidates appearing for it.

You can also use our college predictor to predict the best college for you:
https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

Hope this answer helps you.
Good luck!!