Error While Deleting my database

Hi everyone, I recently tried to get rid of my sql database after trying to host the mysql database on my Digital-Ocean VPS hosting. I tried to enter the delete command, here is the error I am getting;

ERROR 6 (HY000): Error on delete of './mavinkonil//db.opt' (Errcode: 13 - Access denied).

Any assistance for this issue will be appreciated.

I need help.