Toxic/Feeders?

I've been playing a lot of LoL lately, and it seems that 9/10 games I play have 2 lanes that feed, or are incredibly toxic even if they manage to win lane. When they are toxic, it brings whole team down, and we eventually end up losing. I don't claim to crush lane every game, especially because I usually play Vayne, but I'd at least like to have teammate do well in more than 1 every 10 games. Is there any advice any of you have for me? Is it just my fault or something? I don't know at this point, any advice is appreciated.