JEE

At this score, I'll prefer you to opt for the Nirma University as this university is much better than MSU Baroda in terms of placements, infra and faculty.

Your question is not enough to answer. However, private colleges are good if you have enough money. Colleges like VIT, MIT, LPU, SRM-IST, AMITY, CU, etc., have a good reputation and placement statistics. Further, if you are a meritorious student then these will provide up to 100% scholarship also.

Kindly mention your JEE Mains score.

98 percentile is required for admisson.

For getting admission in DTU or NSIT via JEE or HSC score for CS, you have to score a minimum of 270+ marks in JEE Mains or a rank under 5,000 only then you can be able to get CS in these colleges.

After 12th boards, you will not be having enough time to prepare for JEE. Therefore, it is better to join a coaching institute after 10th boards itself, so that you can comfortably prepare and it will not be very hectic also.

Yes, you can apply to any college but I'll suggest you to register in the JEE Mains counselling as through that you can get almost all the GFTIs.

No, you can't get direct admission in this college. These colleges are the best colleges of India and also, these colleges accept admissions through JEE Mains score only.