Why Am i Getting Placed with Teams That are Not on My Level.

SKT Zed - Summoner Stats - League of Legends
SKT Zed / Silver 5 0LP / 29W 43L Win Ratio 40% / Zed - 6W 8L Win Ratio 43%, Nasus - 4W 6L Win Ratio 40%, Yasuo - 2W 6L Win Ratio 25%, Riven - 3W 4L Win Ratio 43%, Ekko - 5W 1L Win Ratio 83%
So today i have had nothing but bad players, i dont understand the matchmaking system i have been playing for years and its always the same you go on a win streak climb then get one bad player who feeds losses you the game and then you go on a massive losing streak because of it no matter what champion you play (Such as Jax JG) check my stats for today if you dont beleive me, i have gone positive every game and my bot or top will feed and cause us to lose at 20?
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