Losing to smurfs and elo boosters for the 6th game in a row what a wonderful game.

Why is it that no matter how fed i get i still can't win becuase the enemy team has an elo boosting asshole smurfing to carry their duo. I do everything I can but i cant magically make my team somehow able to deal with a smurf abusing the fact they have no idea how to play against them.???? WHy do i have to keep getting punished repeatedly and forced losses becuase someone on the enemy team is cheating the mmr system and ruining the game for my teammates???