Hello,

According to your rank in jee main, they are very less or say no chances of getting civil branch in any nit.

But you can the cutoff ranks of your home state nit, there may be some chances of getting it.

You can go for good private college or state governed institute and taking drop is also an option. 

Here is the jee main college predictor, hope it helps 

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

All the best!!!