I've lived in non target locales before and I like them - but I think I want to meet my wife before fully bugging out. SF dating is atrocious so I'm amicable to the idea of being in NYC for a bit.
If you weren’t having any luck in SF, nyc will improve your chances but it won’t fix it. NYC is a hyper competitive landscape for dating and the serious women are off market immediately. It also relies on dating apps very very heavily for serious relationships. I’d test the waters online before jumping head first.