With such a low percentile, you will not be able to get a good college in Delhi or anywhere else. I would suggest you to approach the private colleges and if they accept the JEE MAINS score then take admission to those colleges. Such a low percentile isn't enough to get a good college.

You can predict the colleges you can get, by using the JEE MAINS college predictor as provided below:

For private engineering colleges in Delhi accepting the JEE MAINS score,  consider the link below:

https://engineering.careers360.com/colleges/list-of-engineering-colleges-in-india?state=Delhi&ownership=Private&degree=B.E%20/B.Tech&exam=JEE%20Main

I hope this helps. Wish you a great eve!