Hello Nilanshu,

You may have chances for admission to colleges under state quota. 

Based upon your score in NEET 2018, and the previous year cutoff, chances are less for admission to Government Medical Colleges under All India Quota.

You can refer to the previous years cut off of various government colleges in Bihar using this link - https://medicine.careers360.com/articles/neet-cutoff-bihar

Use NEET College Predictor to Check Your MBBS/BDS Chances in All India Quota, Deemed Universities & State Quota seat Based on Your NEET AIR.
   https://medicine.careers360.com/neet-ug-college-predictor?icn=neet-clgpd&ici=qna-answer

Good luck !!