Hi student,

As you gave the JEE Main exam in 18 March 1st shift, your paper difficulty level was moderately easy so your percentile would be somewhere around 99.26 - 99.34 percentile. At this much percentile you will easily get higher cutoff branches in NIT's, 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!