as u belongs to SC reservation category u have chance to get MBA seat in UNIVERSITY also. but it is based on luck factor as u got not so good rank despite having category reservation. anyhow you’ll get decent private colleges like GVP vizag,Vignan, sankethika, and some good colleges in your area or any where. 

good luck

Visit the site given below as you have not provided with your marks I cant tell you exactly but this site contains the cut off  marks of the colleges , so see according to your marks which colleges you may get and apply for it

https://collegedunia.com/exams/apicet/cutoff