I'm sure you think that over half the teams you play are all ranked geared, super queued, voice comm premades but I can tell you that they probably aren't. Even if they are a premade they likely aren't fully geared and not all of them are good. You, and everyone else who makes this claim, seems to forget you are just as likely to have a premade on your team. But no everyone like to paint the picture of being the underdog and everything is so unfair how can they possibly win?
It's a game. It's a game people play with friends. Group up if you don't like playing against groups as a solo queue. If you don't want to do that, figure out a way to get this game around 10-20k more players on each server, then maybe they could separate the queues.