Hey Azam 

You can not get admission in any government college you wish to as some colleges might accept admission on the merit of more than 80 .But there are many colleges where you can get admission on the basis of these marks .You can check the list of those colleges by using JEE MAINS college predictor tool.

Here is the link for same : https://engineering.careers360.com/jee-main-college-predictor?icn=jeemain-clgpd&ici=quick_links

Hope it helps