How can you figure out what role to main? I usually do poorly in every lane except support or when my lane opponent makes horrible mistakes. And does anyone have ADC tips because I can play every role but I ALWAYS feed as an ADC.
honestly this is a hard question to answer, really it is what ever role you are comfy with. most newer players like bot lane or lanes with 2 people (myself included) it is probably the best way to understand what your role is in the game. As you level up you may find that huh I really like playmaking, maybe I should jungle, or huh I am really good at mid. When I first started I mained Trist and voli and pretty much played bot all the time (probably why they are my best champs atm) as I played more I got learned how to be a carry, a support and eventually a jungle.
You seem? to like to play bot lane specifically ADC so I guess here are tips. Positioning, CSing, awareness and engage
Position: Your positioning is key, you should always position your self so that you can escape with the other adc goes ham or their jungle comes and ganks your shit. You should also be constantly moving between autos. if you can poke, do some but mostly focus on cs.
Cs: Creep score is your bread and butter so practice your last hitting. (when the minon is close to death and you hit it for the gold) basically you want to out cs your enemy and if you can push to deny them gold then do it. (again be safe)
map awareness: if you have a good support then you will always have map vision but keep an eye on the minimap. if you don't then don't push out because you will get ganked easier.
engage: so basically you need to know when is a good time to engage, if your support locks the adc down you start hitting their adc. if your jungle comes in, go ham right as he ganks so you guys can get the kills.
if you want I can play support for your adc (I play aggressive leona [aka proxy lenoa]) and stuff eventually