Dear Aspirant,

As you have mentioned that your percentile is low we can safely assume that you don't have a good chance of getting into NITs for CSE.

Now, there are colleges that accept JEE Mains score and your board exam marks for giving you admission. For example, SASTRA. If you 97+ percentage in your class 12, and about 85+ percentile in your jee mains, you have a really good chance of getting CSE in that college.

You can apply for exams like VITEEE, AEEE, SRMJEE, KIITEE, there you'll have a really good chance depending on your performance. These exams are relatively easier than JEE Mains.

You can apply in below mentioned colleges for CSE

1. Amity School of Engineering

2. College of Engineering, Pune

3. LPU

4. Symbiosis, Pune

5. Tezpur University

Hope this helps