when i hit another humanoid it flings and knockbacks but one shots how do i fix it?

[bold gulch]

I looked at ur script the one shot issue is probably because you're directly setting
targetHum.Health each hit instead of using Humanoid : TakeDamage(). Setting health can sometimes force it down too far or conflict with ragdoll logic.

Try swapping to TakeDamage(DAMAGE_PER_HIT) for normal hits,

That way roblox handle health subtraction safety