PEC Chandigarh and NIT Meghalaya, neither of them are good colleges as of now due to some major reasons.
NIT Meghalaya:
PEC Chandigarh:
It is suggested to take a year drop and start preparing for JEE Main properly and aim to score higher marks. Appear for the January exam and not the April exam as almost every student targets for it and it can be very difficult to score higher rankings as competition will get very tough. January exam will have less competition and it will be easy to get higher rankings which can indeed open possibilities to get admission in one of the top IITs or NITs.