You havent mentioned your Category or the State you hold the domicile of. 343 marks might get you a seat in Reserved Categories of some States like Karnataka, West Bengal. But this score is too less for States like Rajashan and Delhi. This score cannot get you a seat in All India Counselling due to higher cut offs. You might get a seat in Private Medical College in your home State. You can also use our College Predictor services to check your options:
https://medicine.careers360.com/neet-college-predictor?utm_source=google-search&utm_medium=paid&utm_campaign=neet-clgpd

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