Why does it feel like this?

Win lane...lose game Lose lane...lose game Oh am fed..boom they have a nocturne/zed/LeBlanc/ect Oh am useless... still get focused Everyone flashes on you Your team starts a team fight, and your peel is no where to be found. So just do as much dmg as possible before hitting Grey screen. I'd rather play khartus. And the list goes on. Why is so hard to carry as an adc. Is it just me or is this reality.