Hello aspirant,

There may be a greater probability of you receiving a seat with the OBC and home state quota, it is extremely difficult to get with such a rank.
Selecting a very low rank NIT core branch won't benefit you in any way.
Therefore, I advise you to give preference to state engineering institutes. Some public engineering colleges are far superior to even moderately ranked NITs.
Furthermore, I would advise you to participate in JoSAA and complete every round, even the spot round.

Thank you

Hope it helps you.