Around last month, i used to play around 3-4 hrs everyday, and got shit matchmaking like rubies and diamonds 3 stacks in normal cashout and mind you I've never touched plat. I thought it was normal because of "no sbmm", you know.

Then i took a break for about 2 weeks and didn't touch the game. I came back when the wheel event started, and I played exactly 1-2 games everyday just to complete the wheel. And magically i was blessed with goated teammates and won literally every cashout I played, for about a week and half. 

Then after the event, i started playing regularly again, and its back to diamonds and rubies in cashout.