i genuinely don't know where you got the impression that optimal movement in league requires spamclicking "right in front of you as fast as you can"
it's a game with a right click to move unit control scheme
in an active fight you move your unit closer or further away from the enemy between attacks and out of a fight you just click where you want to go
literal rts controls
it's genuinely just a matter of what you're used to because to me, the more traditional action camera and controls are making it 10x more confusing for me to tell what's going on because i don't have the 360° awareness that the traditional rts isometric view and the ability to move the camera independent of your character afford you