I am really bad at this game. Mostly because I'm too much of a sissy to play proper Rift and instead play ARAM and bots. But mostly because I'm just bad.
However, I've come to realize that my shittiness is particularly clear when I'm playing champions that focus heavily on auto-attacking, so most marksmen (I do okay with Corki and Jhin) and various divers and skirmishers (Jax, Olaf, etc.). I just can't seem to get an auto-attack champion to flow properly. The games where things go well tend to feel more like my team is doing well and I get carried to a decent score.
As a ranged character it feels difficult to get in more than one or two attacks. As soon as I step into range I have to retreat due to enemy spells or divers. As melee just getting close to the enemy is a nightmare in and of itself. The most common advice I see is to wait until the initial clash has settled down, but then I'm not actually helping my team and they get killed.
I feel like I'm just spewing nonsense. But seriously. Teach me how to auto-attack.