Ranked Duos QQ story

So this is how it starts. Everyone is in lobby people call their roles and me maining support say "support only plz" (I honestly just play bot and my other roles are garbage) . Someone above me calls the same role so I ask nicely if I may play it and she responds with a no and I her partner says they are duo. I'm not very good other lanes as I stated so I tell my team I will take zyra top. At this point in time my team starts to complain. I assure them I have done it before and its not that bad. Anyway after bashing me the game starts. at about 10mins maybe sooner the duo had made enemy trist 5/0 while I'm at top with a 2/0. At another point in the game he is 1/8 and here I am with 9/0. Anyway game is a loss and its was because bot sucked.

TLDR; people bitch about you being bad and they end up being the baddie.