Based on your percentile, it will be difficult to get a good NIT or any other college for that matter through the JoSAA counselling.

However, you do have the option of getting into colleges through state counselling and university counselling, for example, Maharashtra counselling will open up your options such as Thadomal Shahani Engineering College, Mumbai, Thakur College of Engineering and Technology, Mumbai, Vishwakarma Institute of Information Technology, Pune, and many more.

I also suggest that you sit for the second attempt of JEE Mains since you will get a chance to improve your score.

If you want to check your rank range based on your percentile, then you can refer to the Careers360 JEE Main Rank Predictor: https://engineering.careers360.com/jee-main-rank-predictor?utm_source=qna

If you need more information regarding which colleges you would be eligible for based on your marks and details, then you can refer to the Careers360 JEE Main College Predictor: https://engineering.careers360.com/jee-main-college-predictor?utm_source=qna