Engineering Entrance Exam

With 76.23 percentile, you can expect private colleges and select state universities, like Maharishi Markandeshwar, SAGE University, and Arya Group of Colleges. Getting into NITs is tough at this percentile, unless under reserved categories.You can also use this percentile for some scholarships in private colleges .

With 538 marks, you can target government or low-budget colleges. Options may include state universities or institutes where Data Science cutoff is close to your mark/rank. It's recommended to check recent cutoffs and apply accordingly.

For downloading previous year papers you can refer to various websites including the official website of NTA.
Apart from this there are multiple ways which include multiple websites which offer free pdf's of previous year JEE Mains question paper. If not downloadable they provide online pdf's which can be accessed by just logging in on the site.

Within 93.6 percentile in JEE Mains you can target a range of good NITs iits and other government funded technical institute (GFTIs) especially if you have a reservation. 

For general category you may need to consider some of the new year NITs or explore branches other than computer Science in nits.

Based on your percentile its very hard you to get NIT, IIIT, or GFITs but you can go for private college like Chandigarh University, UPES, LPU, SRM, Amity University etc.

Unfortunately, with a JEE Main AIR of 60,000, you cannot get into an IIT, as IIT admissions are through JEE Advanced, not JEE Main.However, with AIR 60,000 in JEE Main, you can target top NITs, IIITs, and GFTIs for ECE. Some good options include:-

1)IIIT Lucknow / IIIT Nagpur

2)NIT Raipur / NIT Goa / NIT Sikkim

3)IIIT Bhubaneswar (State quota)

4)GFTIs like Assam University