Hey there, Based on your rank and you also belong to OBC Category, You can get into NITs and you can even get good branches there as you belong to OBC Category and that will be very much helpful to you.

You can even get admission in good NITs like NITJ and other NITs too and try for CS there.

I will recommend you to check All The Colleges, That is available for You on basis of your rankings and Reservation, Then You can also check that at Our JEE MAINS COLLEGE Predictor. That will be very helpful for You. And Then You can easily compare good colleges and choose which one will be best for you.

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

ALL THE BEST :)