It is very diffcult to tell you about the exact possibilities and chances of you getting a college because the counseling has not yet started.

However with the rank you have provided, it seems very diffcult for you to grab a seat in CSE department in any NIT/IIIT/IIEST/GFTIs. But, you can always apply for state engineering counselling or other private colleges Which intake students from JEE MAIN.

Other private colleges you can try are TIET patiala, Jaypee institute, Heritage institute kolkata,GITAM university,LPU Phagwara.

To know more about your chances in other streams through JEE mains using your rank, follow through the link below

https://engineering.careers360.com/articles/jee-main-cutoff-for-top-nits