Hi Annu,
As per the previous year cutoffs for B. Tech Computer Science and Engineering branch at NIT's, at 36700 rank you will not get any NIT for this branch. You may get admission in state level colleges in CSE branch or you can get these branches at NITs:-
Refer here for more info - https://engineering.careers360.com/articles/nits-cutoff-for-b-tech-computer-science-and-engineering
To know your other best admission possibilities of Institutes & branches in JOSSA & State counseling as per your percentile, You can use JEE Main College Predictor tool given below
https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer
Feel free to ask doubts in the Comment Section.
I hope this information helps you.
Good Luck!
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