I've just watched a bad ADC lose all 3 lanes for her team

The ADC Kalista goes 0-4 against an Ashe and keeps going, taking it to 0-5. Their bot lane wins easy and takes turret. I'm 2-0 against Illaoi.

I then see her heading my way. I ping and warn to stop. No answer. She then decides to pick a fight with Illaoi at Top lane(I'm Gnar), while taking all cs along the way. I feel I have to go in with her. End up dying, while she grabs the kill.

With no one in bot lane, their Ashe decides to continue her stomping at Top lane. Kalista then leaves, leaving me to try and defend a lane against Ashe and Illaoi. Obviously, that lasts about 5 seconds once they clear the wave, as Ashe auto's and W's me, while Illaoi keeps poking with her E and Q.

Top lane is gone in seconds.

They continue on while I die, grabbing T2 Top Tower. Kalista of course is also dead and then goes to mid.

They then move onto mid, clearing out mid tower. By 14 mins, all lanes are lost and 5 turrets are gone. Game ends at 20 as we get our nexus hit and we surrender while the enemy team greets us with "super ez" remarks.

So for people who say one person can't throw a game, that's how you do it.