Am I just had too low of an ELO right now?
I don't think playing more will help at all. There seems to be a constant influx of new players, and since they're randomly placed you can't avoid it on the random team ladder. This week playing 4v4 I went from ~3k to ~20k, most games the best player on the team by a massive margin (2x-6x), so I don't know what else I could've done. Next week I'll be randomly against people with connection problems and back up to 3k again. The difference is more pronounced in 2v2 as well since whoever gets the new player has no chance really.
I actually have a huge amount of respect for people with high random 2v2, 3v3, 4v4 ranks (moreso than 1v1) - no idea what they are doing but whatever it is, it's magic. Also it's interesting they're usually not top 1v1 but still manage to get their teams the wins. Maybe someone who is good at random matches can share their experience?