hello insan

based on your jee mains rank and last year trends you can definitely get a govt college:

for cse,it,ece you should try north east nits, new iiits and some gftis

https://engineering.careers360.com/articles/list-of-indian-institutes-of-information-technology-iiits

in nit you can get lower branch such as

metallurgy in nit bhopal,biochemical,food ,ceramic at nit rourkela,lower branch in nit raipur

best of luck