i got into pipe smoking tobacco because i rejoined the gym (also after a facemelting breakup when my ex left me for showing emotions), and as it turns out, there's a massive pipe smoking community of people who gather just to shoot the shit and hang out. now i'm not gonna be a negative influence and tell you to start smoking, but just giving an example of an accidental masculine community i stumbled across. i'm also thinking of starting my own wim hof styled meetup where a bunch of guys can expose ourselves to the cold and deploy his breathing methods, and i can guarantee you there won't be a single vagina that shows up.  i'm sure if you brainstorm a bit and think about hobbies you like or would like to try, you can logically deduce which ones are likely to be 100% male.
Canada