how am i supposed to work with the potatoheads?

Logeu of Legndus is a extremally fun game if you know what are you doing , you can meet thousands of people all around the globe , learn about your bio family and tilt others playing singed. But sometimes a game like my last one come when actually botlane fall flat and withered then miserably died [botlane adc yasuo and support brand]. They fed in pair with my jungler , game went horrible, but they didnt even gave a second thought about it...... I dont say it happens every game [cus it doesn't] but for the love of god everything is winnable so can somebody share with me how am i supposed to win those games????