I really like League's matchmaking, placements say I'm bronze 4? Take a full Silver enemy team

Like I just don't get it, if I'm getting matched with Silvers, why the fuck am I not in Silver? How stupid is this fucking system? edit: Won a game, now it says I'm bronze 3 in placements, enemy had a Gold 4 jungler. https://na.op.gg/summoner/userName=LoLsucksTFTisOK What the ever living fuck is this matchmaking algorithm?
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