Hi Karthik, hope you are doing well, you have good score in +2 but with your pecentile of 83 in jee mains you can not get into any of the nit especially of CSE stream but you can try for other streams like ece, mechanical etc. To know more about the admissions through jee mains go through the rank predictor in jee mains, the link for rank predictor is provided below

https://engineering.careers360.com/jee-main-college-predictor

I think it helps you!!!

Keep Smiling:)

Wish you good luck!:)