So i think that i'm not the only one who walks into this problem multiple times. You join a solo game, but you're stuck with some duos that refuse to talk english. People that only wanna talk French for example. This frustrates me, because you can't communicate and you don't know what they are saying. They could be calling you ** without you knowing it.
I feel like this should be a rule in SOLO/DUO only. But not in flex, because that is a place where you can play ranked with a lot of friends. And your english doesn't have to be good. But just so people can kinda understand what you're saying.