I hate when you're in series and you 4 games in a row have a 3+:1 KDA and you lose games

I hate this bs.. I fricken go super positive destroy my lane and the game but can't carry when bot lane trolls and I have afks.. This happens every placement. There needs to be some sort of forgiveness when you get 3-4 people reporting the same people on your team in a game for losses during a series.