First and foremost, get masters and preds out of diamond lobbies. Those who grind it out within the first few days of a series get to play a much more loose and kill hungry style of play, they've already hit master. Not everyone of that caliber has the time to grind it out so fast, whatever the life reason may be. Job, significant other, what have you. Pretty typically those masters/preds will try and push you regardless the situation and either you lose or you win and get third partied nigh instantly, constantly causing you to lose out on points.
Second, there should never ever be an instance where you queue with a 2nd but rely on a random as a third where that third is not in your rank. If I'm in diamond, I should never be getting a third that's plat.
Third, how is it even remotely possible that in three straight solo q's I get matchmade to three straight non-english speaking teams. I'm not calling for region locking but how is it even possible that I repeatedly get matchmade to people I can't communicate with.
Source: https://www.reddit.com/r/apexlegends/comments/gzyfpo/ranked_matchmaking_has_to_be_addressed/