Why does the knight move in an L?

Part of the idea of the knight maneuver is to flank. And since the Knight is not a horse but a man on a horse, the odd maneuver reflects the knight’s ability to guide the horse he’s riding (to an extent).

What are the moves of horse?

People can walk, skip, and run. But with four legs, horses can move in even more different ways, called gaits. They naturally walk, trot, canter, and gallop, depending on how fast they need to move.