Let me ask you this- next year, if/when interviewers ask you why you declined your admission this year, what are you going to say?
My personal opinion: no, don’t drop your admission. The acceptance rate in state is like 30% for first time applicants and it drops down abysmally after that. I would consider it a red flag when interviewing. Who’s to say you won’t pull the same thing again?
For better or for worse, there are going to be moments in your training where you gotta just buckle up and make the best of a less than ideal situation. When you’re assigned to a ****ty rotation in MS3 what are you going to do, take a gap year and hope for a better location? What happens if you match to a residency that’s not ideal, are you going to release it and reapply? (Don’t do this, obviously.) The school you matched into wanted you there. I think that’s so important to remember - you beat the odds, they decided to bet on you and believe in you. I would take that and run with it. You wanna be a doctor, right? Someone just gave you a chance to make that dream come true.
As someone else asked above, I am curious what you don’t like about your match school.