Minecraft version - 1.19.4
Mod loader - forge
Mod version - 1.6.2
I am using the latest version available - yes

It is what is. All animation resources are open source. Feel free to improve them if you want.

It seems that my previous conclusion was wrong, it is possible that the animation is not a problem. The problem can be solved by changing the position where Steve holds the weapon.

If Steve's hand were closer to the end of the spear while holding it, this issue may not occur.

This raises another issue, where the attack distance of a spear should usually be farther than that of a sword. However, due to the incorrect position of the hand, the attack distance of the spear is almost the same as that of the sword (visually).

The player has no problem holding the sword, but there is a problem of the hand being too close to the front when holding the spear.

Players also have this problem when holding a trident with one hand, as this holding method wastes the length of the weapon, and from a visual perspective, the attack distance is almost the same as the sword.

The way a golem holds a spear is different from the way a player holds a spear.
I mainly refer to the position of their hands

When using some weapons for stab attacks, the problem shown in the above picture may occur

It is what is.
All animation resources are open source. Feel free to improve them if you want.