If you are warned about a horrible match up, LISTEN and don't feed.
First off this is not a rant about feeders, we all know that is a problem that will be here forever. It is more about teammates not listening and being too stubborn. When in reality staying under turret, soaking as much cs and exp as possible even though completely behind WITHOUT feeding is 100% better for your team.
Played a game with a Riven top against a Volibear top. I have seen the match up before and by just thinking about it on paper, Voli is too tanky and has sustained damage, paired with his tank stats and passive riven CAN NOT kill him by herself, she will try while Voli shrugs off her damage and executes with his W. A friend and I politely warned her, and even with 100 hp against Volis 500 she stayed and got first blooded and then fed him over and over. He then left lane with 2 tank items and destroyed our team. Which forced us to surrender.
I have played many games like this before, I see a horrible match up when the loading screen starts and the first thing I do is politely say "This is a bad lane, you cant fight this guy, just be safe." But the person proceeds to fight, even after being EXTREMELY low and basically a free kill they do not return to base and eventually end up being free kills over and over.
One of the good things about league is the ability to counter a champion with another, whether it was random in normals or intended in ranked, you need to respect that you cant win everything even if you are skilled. And even if you are more skilled than your laner, jungle ganks are extremely easy when you have a low hp champion to bait while the jungler gets in a bush or quickly comes to clean you up.
TLDR: Learn your match ups and respect what the limits of your champion and the enemies champion can do. If you cannot beat them just farm and be a team player without feeding. You will be a much better asset to your team if you aren't a feeder. Build defensively and just stay alive, this will force your enemy to roam when they can not kill you. Which is good and bad, BUT you didn't feed them and you are able to push and get all the farm you want. All that is needed is MIA pings and maybe a chat warning.