Well, 

Though you fall under obc category but your Percentile is 80 in jee mains which indeed is very less to get into top engineering colleges.

Your chances to get top 10 engineering colleges is almost negligible with this Percentile. 

To see the cutoff for previous year's for JEE Mains, you can please visit the link given below, this would clear your doubts easily :

https://engineering.careers360.com/articles/jee-main-cutoff

For furthermore information please go through the link given below to predict the colleges you may get :

https://engineering.careers360.com/jee-main-college-predictor

I hope this would help you. For further queries please feel free to write me down in the comment box.