Whatit Do

So you can't switch mid match and you're stuck with a team who doesn't know what they are doing with a comp that doesn't work against a team that does and knows everything but you literally can't do anything but suffer or close the game down until that whole game is done. The logic is actually disgusting. How can I learn a new Champion when I have a team who gets hard countered for the whole game. I just don't understand that logic.