Hello.

91 percentile in JEE mains means approximately a rank of around 70k.

With this rank, you can try out for the home state NITs if you want a good branch.

However,  since you belong to the OBC category,  you may also expect a seat in the top NITs like NIT trichy,  NIT Surathkal and NIT Warangal,  but you may not gwt the desired branch or may have to wait till the last rounds of counselling.

So, it is better that you so apply for other hood GFTIs as well if you have a firm specific branch preference.

Good luck!