"if C pressed and the player walkspeed is 16 dont make crouch = true the crouch functions"

-- server script 
local NormalWS = 16
local CrouchS = 6
local AnimationID = "rbxassetid://14376625517"
local cas = game:GetService("ContextActionService")
local CrouchKeyCode = Enum.KeyCode.C
local player = game:GetService("Players").LocalPlayer
local char = player.Character or player.CharacterAdded:Wait()
local Humanoid = char:WaitForChild("Humanoid")
local CrouchAnim = Instance.new("Animation")
CrouchAnim.AnimationId = AnimationID
local CrouchAnimm = Humanoid:LoadAnimation(CrouchAnim)
CrouchAnimm.Looped = true
local Camera = game.Workspace.CurrentCamera
local TweenService = game:GetService("TweenService")
local UIS = game:GetService("UserInputService")
local Crouching = false
CrouchAnimm:AdjustSpeed(1)

local function onCrouch(actionName, inputState, inputObject)
	if inputState == Enum.UserInputState.Begin then
		if Crouching then
			Crouching = false
			Humanoid.WalkSpeed = NormalWS
			Humanoid.JumpPower = 50
			Humanoid.JumpHeight = 7.2
			CrouchAnimm:Stop()
		elseif Humanoid.WalkSpeed ~= NormalWS then
			Crouching = true
			Humanoid.WalkSpeed = CrouchS
			Humanoid.JumpPower = 0
			Humanoid.JumpHeight = 0
			CrouchAnimm:Play()
		end
	end
end

cas:BindAction("Crouch", onCrouch, true, Enum.KeyCode.C)
cas:SetImage("Crouch", "rbxassetid://5149449514")
cas:SetPosition("Crouch", UDim2.new(0.382, 0, 0.088, 0))

Humanoid.Running:Connect(function(speed)
	if Crouching and speed == 0 then
		CrouchAnimm:AdjustSpeed(0)
	elseif speed > 0 then
		CrouchAnimm:AdjustSpeed(1)
	end
end)