Unbalanced Matchmaking and premades

This is a problem a lot of us have been having about the unbalance in games. Today i encountered a game (Normal Draft) where Silver 3 players went up against Diamond 4 and 5 players. This ruins the user experience for a lot of players even though some welcome such a challenge. However when this imbalance transfer into ranked games where people team up with higher elo players to stomp lower elo makes the game very unbalanced and match histories reflect all out stomps and lots of lost LP because a solo laner gets dominated by someone in a high designated elo and skill level. We really need you to fix this riot as this is a problem a lot of us have. Anyone in agreement plz upvote