Just gotta pile in here and say that skill wise, games feel extremely random.
Huge amount of players in the middling ranks are grossly misplaced (in both directions). You done goofed with the placement algorithm and/or ranked+unranked MMR merge.
Background: I started playing early November having never touched the game before, but I've been a FPS pro in a different title and I've had 6k MMR in dota2 some years back.
I've climbed from initiate to now at archon 3 in the span of a month and still climbing fairly fast, I win my lane about 95% of the time, and out of those roughly 80% are straight up stomps.
Today, I stomped my enemy in lane so hard, he abandoned the game after about 7 minutes in. Then, three of my teammates also proceeded to leave once the game was safe-to-leave, effectively resulting in a forced loss for me because I won my lane too hard. No need to point out how ridiculous this is given the fact this also results in MMR loss.
Think there needs to be a win-streak / loss-streak bonus that amplifies MMR gain/loss, and if there is one it needs to be considerably more aggressive to sort players into the brackets they belong to faster, at least when winstreaks / loss-streaks are combined with underperformance or overperformance in those respective games.
I solo-lane 98% of games - Swear to fucking god I'm laning against a high phantom / low ascendant level player one game, and the next game I'm against a guy who doesn't know how to parry or deny souls and I just steamroll him with no effort.
And both of these players are in archon.
Cherrypicking a couple of the most ridiculous recent examples of how bad these lobbies are, and then a couple of examples of me being the only player with a functional brain on my team (with all love and respect).
The infernus game in particular was a spiritual experience
Honestly at this point just do a hard MMR reset and try again with a new placement algorithm, rather than leaving a huge portion of the playerbase grossly misplaced.