Hello Student, 

All your performances are good but not that much fine for a seat in good NITs.
As there are very limited seats for Architecture in NITs and with your rank it's hard to make up for them.

What is suggest is to try for some good private institutions in your state as well as outside.

You can find many good collges as per your score, here:
https://engineering.careers360.com/jee-main-college-predictor

Hope this will help.
All the best for future.