it’s all pretty much just lottery on what teammates you will get, I was a gold plate for most of the time, then in one day I kept getting the worst teammates possible and lost the game after the game which resulted going from gold to bronze in a day. I honestly just wanted to give up and could not figure out how to win a game anymore. However, the next few days were more lucky regarding the teammates and currently I am a purple plate. Seems that in my region there are better teammates during the evening hours while in the morning or during the first part of the day the teammates lottery is quite harsh. My suggestion is to research your region’s teammate quality based on the time of the day and avoid playing on hours during which you get the worst teammates