why is the skill gap in the adc role more prominent on average

I don't get it. you have the one adc on enemy/your team. doing everything right. and the oppsite side is doing everything wrong. you can lose mid lane and still do something. same with top and jungle and support. but somehow its either your adc is either killing everyone. or simply thinkining hes a frontliner that sits there and dies. I don't get it at all. every game i play is decided like this. if my bot lane loses. even if i teleport and make it even. they still lose and gain nothing. literally last match i teleported in. and gave my bot lane 2 kills. and then they continued on being drove out of lane and losing every single trade without even trying to fight back. or do something different. this is literally every match. i tried not to give up and go bot lane as much as i can to help them out because am not always playing a carry. especially when the enemy team has 2-3 carries and you have 1-2 and one of them is doing less to the fight than a tank is. what do i have to do to not lose due to a bad adc? I mean when you do as much or less damage as the tank and your the adc. what have you been doing? what else am i supposed to help them more than just teleporting to their lane and actually handing them kills and lane pressure and farm on a silver platter. its so hard to win when you get the short end of the stick on the adc role. i feel like anyone else on the team would manage with a bad top or mid or jg. but not adc.

i understand that if they get behind early game they do no damage compared to a fed adc but how bad do you have to be to lose every single 2v2 fight and lose both turrets in 12-15 minutes. can't you farm under the turret in a losing lane? i mean this is gold elo. it looks like bronze