Hi Samarth,

As you gave the JEE Main exam in 16th March 2nd shift, your paper difficulty level was moderately difficult so your percentile would be somewhere around 79.95 - 83.21. At this much percentile you will not bet NIT, you may go for state level or private engineering colleges. You should also try for advanced.

Refer here for more info - JEE Main Percentile Predictor 2021- Calculate Percentile Score to Ranks here (careers360.com)

To check your chances in different colleges, you are required to use JEE Main College Predictor Tool:- https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!