Hello dear 

You didn't mention your category, so I am assuming you from general Category. 

If you are from general category,  then  with 450 marks,  you will not get a seat in Government Medical College, for example last year lowest marks that fetched a seat under state quota for general category was 562 marks and it was for North Delhi Municipal Corporation Medical College, New Delhi.

For further details go through the link below :-

https://medicine.careers360.com/articles/neet-cutoff-du

thankyou