Focused on myself for awhile... What the hell do I do now?

27M, I've been happily improving my life a ton in the past year, I'm keeping in shape, finally got a stable job and hobbies.

However, I have not been dating women for a looong time, after my last long term relationship. Problem is, now that my life is settling a bit, I wan't to get back to it and have no idea where to start...

I'm not alone in life per-se, but all my social circles are heavily male-dominated so I don't currently have any chance with work or hobbies. I go to bars from time to time with friends but I'm not sure I should even be approaching random people through those events.

Should I go back to dating apps? Last experience didn't go well so I'm not sure they're really helpful. Should I try changing how I view my hobbies? I do sport and music but often alone or in small groups with close friends but it could be interesting trying that in new groups.

Any ideas? I'm living in a small city in Europe