Dear Himanshu, 

With 77 percentile in JEE MAINS I think that you have not qualified for advanced level. But there are many colleges you can get. Many good colleges holds their own entrance exam for admission. Like SRM University, BITS, KIIT and many more. Hope this serves to be helpful to you. Good wishes  

Himanshu, 

You are general candidate I guess. 

And for a general candidate to get a seat in NIT/IIIT/CFTI is impossible. 

You have to consider other options like private colleges. 

I can suggest you few like CHANDIGARH UNIVERSITY, SHARDA UNIVERSITY, CHANDIGARH GROUP OF COLLEGES, CHITKARA UNIVERSITY, UPES DEHRADUN, AMITY UNIVERSITY. 

Fir detailed college list use college predictor link given below 

https://engineering.careers360.com/jee-main-college-predictor?utm_source=google-search&utm_medium=paid&utm_campaign=jeemain-clgpd

Hi Himanshu,

If you belong to reserved category (st/sc) then you have a chance. Otherwise forget about NIT colleges.

Then too, go for counseling.All the best!!