"Can you make a script that creates fluid head movement for the player?"

-- local script 
local RunService = game:GetService("RunService")
local Players = game:GetService("Players")
local player = Players.LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()
local humanoid = character:WaitForChild("Humanoid")
local head = character:WaitForChild("Head")

local stiffness = 0.5
local damping = 0.5

local target = head.CFrame
local velocity = Vector3.new(0, 0, 0)

RunService.RenderStepped:Connect(function(deltaTime)
    if humanoid.Health > 0 then
        local goal = character.Torso.CFrame * CFrame.new(0, 1.5, 0)
        local position, rotation = head.CFrame:ToComponents()
        local goalPosition, goalRotation = goal:ToComponents()
        
        local newPosition = position:Lerp(goalPosition, stiffness * deltaTime)
        local newRotation = rotation:Slerp(goalRotation, stiffness * deltaTime)
        
        local newVelocity = (newPosition - position) / deltaTime
        velocity = newVelocity:Lerp(velocity, damping * deltaTime)
        
        head.CFrame = CFrame.new(newPosition, newPosition + velocity) * newRotation
    end
end)