Hey Swarop.

See the marks u have scored is not enough for u to get admission in the good colleges like NITs and IITs for pursuing ur higher studies in the field of ur interest. U can also apply for other state colleges and private institutions for ur mtech career.

i m providing u a link for ur help.

https://www.google.co.in/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=2ahUKEwjzhNfj253hAhV663MBHeCYBmEQFjAAegQICBAC&url=https%3A%2F%2Fengineering.careers360.com%2Fgate-college-predictor&usg=AOvVaw1xiFTORDwDEpBZmadY5ZwG

Ask if any other query. Good luck