Why i main adc but only play support in ranked

It could be because im low elo or just inexperienced on how to truly carry a game but most games i get to play draven and i dont have a team yelling at me to take heal over ignite i will dominate all the way up until mid-late game, by then im usually getting flash ulted or flanked by an annie/(someone with hard cc or an assasin) from the backline and most of my teams usually depend on me make these over the top plays to carry the game. Im not trying to rant for sympathy or saying that im so great i have to be focused to win but instead reaching out to get as many tips or be refered to someone interested in showing me how i can improve so i can carry those heavilly depended games bc i love playing adc but find more success in climbing the ranks as a support through my knowledge of other adc's cooldowns/strengths/and weaknesses. It is also easier to carry bc roaming as a support is very underestimated and results and good plays that lead to getting laners ahead in their matchups or even capturing objectives. I wonder if anyone else thinks this way, the support carry being the easiest way to climb?