Hello,
With the percentile score of 76.8... in jee main you won't be able to fetch any college through jee main taking your category quota into mind.
So I suggest u to take admission into college through state joint entrance examination or go for a good private college.
All the best!!!

Hello dear!!! 

I think that you good a mediocre score in jee mains and if we also consider your reservation category I don't think you can get core branch like CSE in the top most NIT colleges. 

But I can   precisely help you if you could give me your category rank in jee mains. I hope this helps. 

Thank you