Gujarat

Candidates (Regular/Private) who have passed/appeared in the 12th /H. S. C. Examination in any stream of GHSEB or of any other recognised body as equivalent there to with minimum of 45 percent of marks (Theory Subjects only) in aggregate with English as one of the subjects shall be eligible to apply. So you are definitely eligible.

Parul University is NAAC A+ accredited, while MSU Tirunelveli is NAAC A. So Parul is the best.

The cutoff for CSE in Thapar Institute of Engineering and Technology (TIET) Patiala varies every year depending on various factors such as the number of applicants, difficulty level of the exam, etc. The cutoff for TIET Patiala for the year 2021 was 98.5 percentile for CSE. Since you have scored 98.22 percentile in JEE Mains 2021, it is difficult to say whether you will get admission in CSE at TIET Patiala or not. However, you can check the previous years cutoffs for TIET Patiala.
I hope this helps. Let me know if you have any other questions.

Best B.Tech CSE private universities/ colleges of Gujarat are given below.
1. SLIET Rajkot
2. LJIET Ahmedabad
3. Parul Institute of Engineering and Technology Vadodara
4. Nirma University Ahmedabad.

Here are a few prominent ones:
St. Xavier's College, Ahmedabad
M. G. Science Institute, Ahmedabad
Gujarat University, Ahmedabad
H. A. Science College, Ahmedabad
Bhavan's Sheth R. A. College of Science, Ahmedabad
K. S. School of Business Management, Gujarat University Ahmedabad
M. T. B. Arts College, Surat
Government Science College, Gandhinagar
C. U. Shah Science College, Ahmedabad
Narmada College of Science and Commerce, Bharuch
Sardar Patel University, Vallabh Vidyanagar
Hemchandracharya North Gujarat University Patan.