JEE Main Scores

To qualify for giving JEE Advanced exam, you need to have 75% marks aggregate in class 12th, then only you will be eligible for appearing in the exam. Thank you.

You'll get NIT but with lower rank and with branches such as metallurgy or mining. Kindly explore other options like B.Sc.

You can get admission but in not so good NIT. Moreover, if you are able to land up a good branch, it may compensate the name of a low rank NIT.

Since there are only a few colleges which offer mechatronics engineering in India and one of them is IIT-D.

The smartest people in India get the best package. Some IITians focus on studies, some on their startups and some mere on their degree. The third category has to just do their jobs. It's not about them, it's about their thoughts. Don't worry, Not IITians, but whole India is doing great and non-IITians are also doing great.

Sharpen your mind and intelligence. Don't focus on the trend listen to your needs. Start by taking small steps. Avoid any activity of getting depressed. Try thinking logically. Try solving problems rather than getting answers. Work hard for hours. And the smartest though should be " just focus of solving a 6 hours paper well rather than fighting with 12 Lacs smart peoples. " If you solve that 6 hours papers, you'll ultimately beat that crowd.
Best of luck.

Course fee in Chaitanya Bharathi Institute of Technology, [CBIT] Hyderabad is slightly high. It's around Rs. 1.13 lakhs per year for convenor and B category quotas (through EAMCET and JEE mains) and Rs. 3.25 lakhs for NRI sponsored quota.
For details regarding , go to
http://cbit.ac.in/files/cbitfee1.pdf

If your location is your priority, I would suggest google some of the good universities which accepts JEE Mains marks. Though, moving out of your location, you can get any NIT accepts top 4 or 5. Some better suggestions are BIT-Mesra, NIT-Bhopal, NIT-Durgapur, NIT-Kurukshetra, NIT-Raipur.
You can also try:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

Though with this marks, getting into DTU is difficult. Try appearing for their own exam. Moreover, suggesting you to compromise with the core branches with the name of your college will not be a good decision,