You have less chances of getting a government collage but you may get into a deemed university/college with higher fee margins(18lakh+ pa) and that too in the final mop up round (manual round) if at all you get. You need to fill your choices carefully and keep a close watch over the whole counseling process as to when n all the counseling rounds r happening,their reporting time and all.And also you got to check the respective sites of the college for information regarding the manual rounds.Its not gonna be an easy process .You can try for the colleges in South India because they might be charging a high fee but they provide quality education and have proper infrastructure (such as Shree Ramchandra 22lakh +,A few colleges in Kerala, Karnataka and a few in Pondicherry).For more information check the respective sites and last year statistics and you might be able to get an idea.

But m sorry your marks are not enough for a BDS seet also....

Good luck!