Hi

Your profile suggest that your domicile status Andhra Pradesh

By free seat do you mean Government quota seat?

Even though you are from SC category with 166 marks you cannot get a seat in any government medical college and not even government quota seat in private medical college

For example,
In NEET 2019 the lowest marks that got a Government quota seat in a private medical college for SC category under Andhra Pradesh state quota was 416 marks and it was for Apollo Institute of Medical Sciences & Research, Murukambattu (V), Chittoor District

So,
If you want to get into Government Medical College / or government seat then I suggest you to prepare again for Neet examination and don't worry we have Neet knockout program which will help you at every step of your preparation , the link for the same is given below

https://learn.careers360.com/knockout-neet-may /

Thank you