Teach Me How to Dougie (ADC)

I have played League for quite some time and I feel that I am a decent top, mid and supp. My jungle needs work, but I can swing it if I'm filling. ADC I feel like I am at a complete loss regardless of what champ I play. Lately, I feel like even if I do well in lane, I'm struggling to make a big impact in team fights if my other lanes fed. Even sometimes when my lane isn't going well and we're pushed up against the tower and I just sit and farm, I feel like I'm being out harassed, my jungler doesn't come down to help enough, my other lanes are feeding, etc. In this case I really just try to stay passive and last hit as much as I can.

During team fights, I'm pulled away from CSing or my other team mates don't allow me to farm at all so I can't freaking do my job and carry! Or while in lane I'm getting out poked, out CSed, my supp does nothing but feed or just sits there and does nothing.

I just feel like I'm not able to carry like I'm supposed to, whether my early game goes awesome or not. Any tips and tricks?