Hello 

what you could do is try to find some colleges where jee mains isn't required…

I would like to name some colleges ..

Cgc landran u require 65% for mechanical nd 75% for cse and others in between.

then upes

then jaypee solan can give u a seat with this score

bitsat

then thapar can give you chemical

srm can give u admission through srmjee (a board level paper) very easy)

vit vellore

manipal karnattaka

manipal jaipur

pec u can try they may have seats

You can also try some private colleges in Orissa like CV Raman, Silicon or CEB