I need help on how to play ADC
I'm Bronze 1 currently and I main support. I do pretty well in the support role and I can play top, mid, and jungle decently but I am much better supporting. The problem is when I play ADC I drop to Bronze 5 for some reason. I always say this in team chat and I usually don't get it to often but when I do have to ADC I feel useless to my entire team. I feel most comfortable with Graves, Varus, and Ashe but I'm not really good with ADCs in general.
In lane I'm alright, I tend to keep up with farm and usually don't die in lane, but I very rarely get tower first or even get a kill (unless jungler ganks). I struggle in team fights because someone instantly jumps on me and I die, ala 
or 
and I can get maybe 1 or 2 attacks before I pop. I also position fairly well, but some teammates say I'm doing this wrong because I am usually hitting their front line and they say I have to focus the back line. Well whenever I do that I must go close to their front line and I explode. Generally what I do is attack in this hierarchy
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If there is a person on my face
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If there is enemy on someone next to me (like APC)
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If nothing else I attack what ever person I can safely that has the most damage.
My runes are +12 MR, +9 AR, +11 AD, and +9% AS, I'm not sure if these are ideal or not.
I also see people talk about attack move and I know about it, but I find doing it very difficult. The default is the A key, but I find that it very awkward to attack move and use abilities or summoner skills, and I find it almost impossible to use item actives because I can't get to the number keys. I hear people change it from the A key to a mouse button but the problem is that I play league on a laptop so I use a trackpad. I do have a USB mouse, but it has no extra buttons I can use. Is there another set up I don't know about?
