ADC are too oppressive

Playing adc earlier and it took the shyvana that was several thousand gold behind me a full two seconds to 1 shot me, this is not at all ok at a defecit of several thousand gold ahead I should have had negative chance to 1v1 the enemy bruiser but I had time to heal before the 1 shot with damage item components was complete. Riot please nerf this oppressive role I demand they have 0 impact if not protected by their team, and the 3 aa's I got off before I died was simply too much.