Hello Sriram,
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 may have chances for admission to colleges under state quota. 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

For more information regarding cutoff you can also check the following link

https://medicine.careers360.com/articles/neet-cut-off

Have a great future ahead.