Always Having Terrible or Toxic Teamates

Why is it that every time I play this game I have to deal with the same stuff... the enemy team is a million times better and my teammates are obviously new to the game, or are just bad... it driving me nuts how I get on this game expecting enjoyment then the first thing I get(that continues all day) is having to carry or having to deal with bot lane feeding or having to deal with toxicity and blame because someone doesn't help other lanes... I win my lane 80 to 90 percent of the time and others get destroyed... League of Legends needs a serious fix on the match making