https://us.forums.blizzard.com/en/overwatch/t/overwatch-2-developer-blog-matchmaker-and-competitive-deep-dive-part-1/766683 — make sure you “View full article”
I feel you. everyone is complaining. I had to play 180 games total in a single role to get my rank back to exactly where it was, and I had a NEGATIVE win/loss ratio (less than 50% win rate). I also lost/gained 800 SR total in the SR degrade thing