See most of the entrances claims a minimum marks of 50% for UR and 45% for SC/ST. Thus unless you are SC/ST, the possibility of getting eligible is less.

If you are SC/ ST then you are eligible for TANCET, AP-PGCET.

I would recommend you to reappear on some of your papers if possible and increase your aggregate so that the threshold of 50-55% be crossed.

To know about MTech entrance examination in India you can visit the link below:

https://engineering.careers360.com/articles/mtech-entrance-exams

I hope this answer helps. All the very best for your future endeavors!