How do I make an animation activate if player is AFK?

I'm trying to get my "idle" animation to only be activated if the player has not moved for 40 consecutive seconds. I've only managed to get the animation to play after 20 seconds if the player isn't moving by the 20th second, but this isn't really what I want:

-- This local script doesn't work correctly. It's meant to be an AFK animation, --
-- as in when the player has been idle without moving their mouse for 20 seconds, --
-- then the animation will play until the player moves their chacter --

local Player = game.Players.LocalPlayer
local Humanoid = Player.Character.Humanoid
local mouse = Player:GetMouse()
local animate = Instance.new("Animation")
animate.Name = "animate"
animate.AnimationId = "http://www.roblox.com/Asset?ID=2056648365"

debounce = false
	
mouse.Idle:connect(function(Idle)
if debounce == true then return end
debounce = true	

wait(9)

repeat wait() until Player.Character.HumanoidRootPart.Velocity == Vector3.new(0,0,0) == true do
print 'idle start'
		wait(1)
		if Player.Character.HumanoidRootPart.Velocity == Vector3.new(0,0,0) == false then return
			elseif Player.Character.HumanoidRootPart.Velocity == Vector3.new(0,0,0) == true then
		print 'Idle'
		script.Parent.Folder.IdleWallEvent:FireServer(Player) end
		local playAnimate = Humanoid:LoadAnimation(animate)
		playAnimate:Play()
	repeat wait() until Player.Character.HumanoidRootPart.Velocity == Vector3.new(1,1,1) == false do return end
		if Player.Character.HumanoidRootPart.Velocity == Vector3.new(1,1,1) then
		playAnimate:Stop()
		wait(0.01)
		print 'Idle Deactivated'
		end

		debounce = false
	end
end)

I then decided to use a script to insert my animation into the player, in hopes that I could make the animations play in an order. However, this was unsuccessful as well. I was trying to make it to where my custom animation wouldn't play unless the player had been idle for 20 seconds using weighting:

local Player = game.Players.LocalPlayer
local mouse = Player:GetMouse()
local Idle = Instance.new("Animation")
Idle.Name = "Idle"
Idle.AnimationId = "http://www.roblox.com/Asset?ID=2056648365"

Idle.Parent = Player.Character.Animate.idle

local Weight = Instance.new("NumberValue")
Weight.Name = "Weight"
Weight.Parent = Player.Character.Animate.idle.Idle
Weight.Value = 2

local OtherWeight = Player.Character.Animate.idle.Animation1.Weight
OtherWeight.Value = 4

local OtherOtherWeight = Player.Character.Animate.idle.Animation2.Weight
OtherOtherWeight.Value = 3

repeat wait(0.1) until Player.Character.LowerTorso.Orientation == Player.Character.HumanoidRootPart.Orientation + Vector3.new(10.38,0,0) do
print 'idle start'
		wait(1)
		if Player.Character.LowerTorso.Orientation == Player.Character.HumanoidRootPart.Orientation + Vector3.new(10.38,0,0) == false then return
			elseif Player.Character.LowerTorso.Orientation == Player.Character.HumanoidRootPart.Orientation + Vector3.new(10.38,0,0) == true then
		print 'Idle'
		wait(0.01)
		script.Parent.Folder.IdleWallEvent:FireServer(Player)
	end
end

And here's the function:

local Wall
local success, err = pcall(function()
  Wall = game:GetService("InsertService"):LoadAsset(2096107433)
end)
if success then
  Wall.Parent = workspace
  print("successfully inserted Wall")
else
  warn("unable to insert Wall because " .. err)
end
local Player = game.Players.LocalPlayer
local wall = game.Workspace.Model.SmoothBlockModel
 	wall.CanCollide = false
	wall.Anchored = true
	wall.Transparency = 0
	wait(0.1)
	wall.Orientation = Player.Character.HumanoidRootPart.Orientation
	wall.Position = Player.Character.LowerTorso.Position + Vector3.new(-0.051, 5.548, 2.177)
	wall.Transparency = 0
	
	local yes = Instance.new("Part")
	yes.Name = "yes"
	yes.Parent = game.Workspace
	yes.CanCollide = false
	yes.Anchored = true
	yes.Position = Player.Character.LowerTorso.Position
	yes.Transparency = 0
	
	repeat wait(0.5) until Player.Character.LowerTorso.CFrame == yes.CFrame == false do
			Wall:Destroy()
			print 'Wall Destroyed'
			yes:Destroy()
			print 'Almost Done'
		end
	end

script.Parent.Folder.IdleWallEvent.OnServerEvent:connect(wallcreate)

As you can see I am a little stumped and so I was hoping somebody on here could help me.

https://wiki.roblox.com/index.php?title=API:Class/Player/Idled

Player.Idled:Connect(function(idledTime)
	code
end)

Edit code: Note: Sometimes it won't work, so I added some stuff.

wait()
local plr = game:GetService("Players").LocalPlayer
local c = plr.Character or plr.CharacterAdded:Wait()
repeat
	wait()
until c ~= nil
local torso = c:WaitForChild("Torso")
local oldPos, idled = nil, false
torso.Changed:Connect(function(diff)
	if diff == "Position then
		if torso.Position == oldPos then
			idled = true
		end
	end
end)
spawn(function()
	while idled do
		code
		wait(1)
	end
end)
while wait(1) do
	oldPos = torso.Position
end