Hello,

You will get 83 in NATA which is not so good. And your 12th class marks also good. Your 83 marks is almost 17% percentile. Which college you will get it's quite difficult. May be you will get any private college for architecture.

And NATA marks is different from keam examination dear. NATA only for architecture entrance examination. And KEAM is the Kerala common entrance examination for engineering architecture para medical courses. I'll provide you a link below you can check it for more details about the college

https://engineering.careers360.com/colleges/list-of-b-arch-colleges-in-kerala

All the best.