That’s why you join a clan, and that clan joins a league.
It makes me laugh that people have all these expectations of their fellow pubbers. Pubbing is what it is. It will never become more organized than it is. You will find the occasional “good game” but the only way to get consistently enjoyable pub games is to pub with a friend, on a voice comm, in an exclusive fireteam (for the icons).
When pubbing is no longer enough, it’s time to graduate to competition. This is a truth as old as gaming.
Note that “pubclans” don’t really qualify. That just gives your team organization, while the other team is likely still comprised of a bunch of dubbers. Unless easily rolling over a bunch of dubbers is your goal, you still have to at least have somewhat regular organized “scrims” against other pubclans to get the full experience.
Otherwise it only makes sense for the lone pubber to be a self-reliant medic, and the snowball just rolls and accumulates like that.