Hey there, You have scored 400 marks in NEET. Sorry to say but there are very fewer chances of getting admission at any government college. But you can try for semi-government colleges too. Actually, each and every state and even different colleges have different cutoffs.  So it would be better than first you see the colleges in your state and check the cutoffs there. I would personally like to suggest you check for colleges in your state as you will get a seat under reserved quota and even you can check at NEET PREDICTOR.

 I would personally suggest you use the NEET Predictor and explore various colleges according to your category and home state quota and choose the best one for you as this college will be your future lifeline.

https://medicine.careers360.com/neet-college-predictor?icn=neet-clgpd_landing-page&ici=prediction-section_c360-home