Play Leona/Thresh/Malphite/Amumu/Morgana/any AOE CC Diver
Suddenly, your problem has been solved.
Lol but seriously though, I blame the lack of understanding. Now, don't demean anybody just because they don't understand how your/everyone else's champions work, because the vast majority of the players in the game can not possibly hope to understand every single champion and every single one of their strengths based off how fed they are and what they buy and etc. and etc.. To get my point across, a LOT of people think Shen is supposed to team fight just because he is building tanky. It doesn't matter that he has Teleport and Sunfire Cape, it doesn't matter if they've seen Shen's ult maybe multiple times after a certain point of the game, some people still will think he's supposed to hug the team.
My biggest assumption in YoloQ is to simply assume that everybody only knows how to play the champion they are playing. If there's an Amumu on my team, I'm going to assume he's going to dive a lot and blow his ult. If there's an Ezreal on the team, I figure he'll stay just barely out of range and keep flashing out of danger. Even if you can't trust anybody to understand each other perfectly, if you can react to them, it can solve a lot of problems.