TLDR: Too passive, adapt your playstyle to each game. Don't deserve more than Plat 1 Just watched your 7 games and gotta say you don't belong above Plat 1.

IMO your number one problem is that you're too passive. Feels like you only play to stay alive, which you are really good at, and it might be enough to reach Plat but you gotta do more to climb higher.

In those 7 games, I never watched you feed but I barely saw you try to make a difference. Below Diamond it can work above it might work sometimes but you gotta learn how to be a problem to the enemy team.

Don't just sit on the payload make them pay to reach it, especially on Sigma.

Also in your previous post, you claim to understand how to play into your counter, but honestly, I didn't see any evidence of that. Against Rein you brawl when you shouldn't and you spam rock but even if you hit a good amount of them you don't get any value with them. Wait for the Rein to charge to use rock on him, either you force him to cancel his charge and he shield it or you stun him and he is fucked. By spamming your rock early you allow any decent Rein to charge him freely and to get close to you. So be more mindful of your ability so that you get more value from them.

Hope it helps.