Spear damage, hit radius

I find it difficult to aim at mobs while using the spear. I sometimes pass right through them and don't land the hit. It's difficult to hit while mounted, too, aiming straight on does nothing (because the mount hitbox raises me above the mob). I would recommend having some sort of hit radius instead of "is it touching the hitbox?", which also extends downwards slightly when mounted. I also don't like the damage: there's way more setup to the spear than just critting something out with a sword, so it has to be able to do better than critting with a sword of the same tier if successfully pulled off. E.g. an iron spear should be able to manage 14.4 damage in a second, like the iron sword can: if execution is perfect. Good usage of the netherite spear should also be able to match equally good usage of the mace.

The zombie horse should be good for wielding spears with (maybe faster spear chargeup time when riding a zombie horse?), it would provide a good way to use spears in the early game

You don't have to implement it like this, but maybe you could have some enchantment that increases the power of charging. Additionally, the lunge enchantment should allow you to activate charge while you're being propelled by it