People that DC and dont know how to play

something needs to happen about the people that suck at this game. I feel like a lot of good people get stuck in the lower ranks because of the people that are not good. People are dcing all the time and losing people the game. So many times have i put my team ahead by so much and then get smashed cause they dont know how to play while ahead. It is beyond that people can get put into games with these people.