Hello Aspirant,

See If we go through the analysis of marks Vs Percentile Vs rank for JEE-Main 2021 then according to the percentile mentioned by you in the question your OBC rank is expected to be in the range of 15000-20000 .

Note that the rank which is predicted is only the expected rank on the basis of previous year's data so your actual rank might vary depending upon current factors.

Based on such rank and category you can go for Civil branch in :-

National Institute of Technology, Arunachal Pradesh

NIT Manipur - National Institute of Technology

NIT Nagaland - National Institute of Technology

To have a list of all those colleges which you can get based upon your JEE-Main rank or score you can use JEE-Main College Predictor:-

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

I hope this information helps you.

Good Luck!!