Hello Gaurav, firstly most of the private colleges don't consider the marks of JEE Mains for admission to their colleges, so you shouldn't worry about JEE Mains. Secondly, if you are applying for any private college the chances are they must be having their own examination for admissions to their college. So just perform well on those exams and you can get admission on any of the colleges.

All the best for your future endeavours and thanks for using CARRERS 360.