[superbaconman]

The article misses probably the easiest way to level up: Join a team. A four-stack is almost always gonna have a leg up on a team of randoms. Playing a game consistently, with the same squad, form group dynamics and strategies that are much more difficult to execute with a first time squad.

[shortstuffsushi]

In my experience, beyond just performing better, you'll tend to feel better. Soloing forever is not very enjoyable in team games, in my opinion.