like, just go out and smile at someone in line in the coffee shop. that's it. be friendly. if you think of a [and i can't believe i have to say this but it's the internet and 2026 so: non-creepy] compliment, give it to someone. that's it. not as a prelude to flirting, not just to the opposite sex (or whatever you're attracted to), just to compliment them. brighten their day. something as simple as "yo, i like your shoes." there are days you will need it, so pay it forward.

that is step one in building a community.