As I said in other topics, cavalry in this era had a few particular uses and were not much good outside of them.

The age of frontal cavalry charges is over and done. It's impressive, and a good way to waste a lot of horses, but wont be much use in terms of changing the course of the battle.

Cavalry are rather like the air force. Their main purpose is 'shock and awe', and supporting the ground forces. Cavalry do not win battles.

Charge from the flanks or the rear, preferably against an already engaged enemy who cant turn to face your men.

A simultaneous charge from infantry (from the front) and cavalry (from the rear) is good enough to route just about anybody.