Isn't an entire planet out there? Clubs are mostly slimy places, I don't like those either. Being in public places doesn't force you to increase your openness, it simply puts you in potential contact with more people. Statistically, that's how we find people we like, being that leading to a love affair or friendship. Language courses? Reading clubs? Social gatherings? There's a crowd of possible environments you can expose yourself to, ranging from very intellectual to slimy. Analyse the range and understand what's your limit.

I can understand that, Rome wasn't build in a day as they say. give yourself time and compare your results with your past results.