Some unofficial advice to help you improve

I say unofficial because I found this out from just playing and watching streams, but I'm 99% sure you auto attack faster when you move in between attacks. I read/heard somewhere that clicking immediately after attack animation cancels attack recovery and pros call it orb weaving/walking (or something a long those lines).

It can be compared to using complex combos in Street Fighter.

The actual thing that made me post this is my own experience with allied jungler.

I like big AoE damage so 2 of my favorite champs are Wukong and Fiddlesticks. You cast their ults and stay on the move.

In a match as Wukong, I dominated an Illaoi and a Lux. Somehow, my jungler kept dying.

The thing that me alive was the same thing that killed him.

Me vs Lux = AA, click to side of opponent, AA, click to back side, AA (repeat) which would make Lux miss her Q and R.

Me vs Illaoi = AA, move, AA which would make all of her tentacles miss.

My jungler vs Lux = gets the drop on her, then gets Q E AA R AA bursted at melee range

My jungler vs Illaoi = good gank against 30% health Illaoi, gets killed from tentacle slaps while she heals.

So even if the orb weaving/walking faster basic attack thing isn't true, not standing in 1 spot makes you a much harder target. The same tactics are used in shooting games (Fortnite, Call of Duty) and other RPGs (MapleStory, World of Warcraft).

Good luck out there guys, see you on the Rift.

PS "Don't stand in 1 spot when attacking Illaoi" and "I have top under control, I don't need any ganks, camp mid/bot" and "Seriously, stop ganking top, you're feeding an opponent that was 0/5, please help mid/but get ahead" isn't flaming, it's me desperately trying to keep my lead and help the restof the team get ahead.