Hey there!

With 85 percentile, you may not get NITs or the IIITs. And as far as your attempts are concerned, you can appear for three consecutive years after class 12th, which means you could have 6 attempts for jee mains, so even if you not get the college of your choice this time, you still have many options to retry.

Although you could get some state colleges through the state counselling, to see your options of colleges based on your jee mains score, you can use the jee main college predictor tool, here's the link for that - https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer