Hello Gokul! Where are you from? What stream did you choose in +2? What is your interest? Choosing your college and branch depends on the answers you give for these questions. I will send link of the college predictor created by Careers360. It will helpful for you to decide which college suits you. The link is

https://engineering.careers360.com/tnea-college-predictor?ici=cp-listing_engineering&icn=TNEA-College-Predictor

Just check this awesome college predictor website. Before that decide which course you are gonna choose. I suggest you speak with your family and senior students or friends to decide which college and what group you are gonna take. Additionally, it is your responsibility to explore the various opportunities available. Wish you all the best. Hope this was helpful. Stay safe.