I did choose them, luckily I got to audition them from around 300 people I've been forced to interact with through over my career during the past 10 years. Not only do I get to know their characters well because I can decide if I like them or not and find out if they're trustworthy through working together I also get the extra benefit of being recommended for jobs through them.
How on earth am I supposed to do that though clubs? Presumably you mean sports clubs because no sure much else than that exists for adults, what if I want to make friends with people who are not interested in sports?