So much to know about league that people don't even know about. (Competitive talk)
People see league at face value; however there is much deeper things like minion waves objectives spawn timers and rotations to ganks/objectives Red/blue buff is also objectives that can be rotated to...
Microing and Macroing The ability to control your character in a 1v1 and see what's going on around you with teleport/mapawareness and where you should be
how the game goes and what you should be building... waveclear so you can get objectives or what??? teamfight- understand your team comp and what you are capable of doing in a teamfight... lane swap for dragon pressure, or ability to force a fight
ability to react with teleport or rotating to fights
csing is a big deal for microing and how to take the least amount of damage, so you can be useful at all times of the game, or beating your enemy laner.
warding and ward sweeping is a big roll and catching people with lack of vision on objectives is a big deal too
knowing when your team is most powerful is also a big deal.... BUUUUUT THERE IS SO MUCH MORE THAN WHAT I AM SAYING HERE
how to survive lane phase matters and what to build and how to react or not to react to things your team does.
P.S.- Read the damn patch notes and know what items are strong, so you know what to build lol