Hi, since you want to take admission in MMM, Gorakhpur with the help JEE Mains result it is possible but you may know this thing first that there are only 10% seats are reserved for admission through JEE Mains. Since the rank you have mentioned is your EWS category rank not All India Rank and with this EWS category rank you can't get into MMM, Gorakhpur as it is not sufficient hence you will not get any branch in the university with this rank. So I suggest you to go for another college rather than wasting more time into this.

Good Luck.