Can I get any private college in Tamil nadu under 220 marks

Hello student,
You have not mentioned which category you belong to. With a score of 220 , if your category is general, then it becomes difficult to secure a seat in the private medical colleges when comparing the results of previous years. Last year, a minimum score of 363 was required to fetch one a seat in oc category under the state quota in Tagore medical college and hospital. But, scores and ranks vary each year with difficulty level of the question paper and availability of seats. However you can go through the following link to know about the cut off's and ranks for the previous years and calculate your chances of selection in your state
https://medicine.careers360.com/articles/neet-cut-off
Good luck