Which are the good course options available for me? Which are the good colleges to pursue the same?

See your score of JEE is not good as you also know, so you will have to look for goof colleges everywhere so that yiou can get seat in a good college, do not confine yourself to an area. Log in to some sites like Lovely Professional University Jamia Milia Delhi College of Engineering , Delhi

Hi Ramesh, 20 is too low a score to secure a seat in a government reputed college. However, you may appear for other entrance exams and secure a seat in a reputed institution. Other engineering exams that you can appear for : https://www.shiksha.com/engineering-exams-still-open-for-registrations