Hello Reservation for EWS category is being provided for the first time by NTA in JEE Main exam therefore it would be difficult to tell you about your chances of admission as previous year cutoffs for EWS category is not available.
However, according to your rank, chances seems to be there for getting a seat in MNNIT and IIIT Allahabad.
Good Luck!
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile