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 and state quota. You can apply for Karnataka & Tamilnadu private colleges. Use NEET College Predictor to Check Your MBBS/BDS Chances in Deemed Universities & State Quota seat Based on Your NEET AIR
   https://medicine.careers360.com/neet-ug-college-predictor?icn=neet-clgpd&ici=qna-answer

You need to register on the particular state website to get the admission for its private colleges.

Good Luck!