Same. 470sr, eventually hit GM5 a few seasons back.
Match making isn’t why I sucked and dropped like a lead balloon. And it isn’t why I learnt to play better and climb. It just takes time.
That amount of time, is probably what leads people to this blaming of things that aren’t responsible. They want instant gratification. Sadly, if you don’t start with the prerequisite set of skills, it could take years to learn them and earn your way up.