Hello Imtiyaz Ahmad!

With 143 rank and belonging to obc category you can get govt medical College through state quota as well as all india quota. As you have no mentioned you domicile state and preferred state so it will be difficult for me to suggest colleges. You can get MAMC Delhi, UCMS delhi, VMMC delhi through all india quota. I provided a link which can help you to find colleges as per your neet rank. 
We are predicting this on the basis of previous year cut off trends. We. Are not sure about this year cut off as it changes every year depending on no.of candidates, no.of seats and difficulty of exam. So hope for better result this time. 
Here is a tool which can predict college on the basis of neet score. I hope this might help you 
https://medicine.careers360.com/neet-college-predictor?icn=NEET_clgpd&ici=NEET_article_view_sticky

Hope it helps!

Thank you!