THE STATE OF ADC'S

i feel like ADC's as a whole are failing to carry games, as the name implies Attack Damage Carry, you would expect to carry the team in some form, and i always get games where i go 20/1/9 and completely lose the game, unable to carry my teammates, i am in bronze, and im a ADC onetrick. i walways seem to get ahead, but always lose the game, i feel like the sate od ADC;s arnt where they should be is this my incompetence to help my teammates, or am i hard stuck