Weld.C0:Lerp() animation not stopping?

Ok so, I just made a script where when a player walks, a certain animation using Lerp() is played, and a separate one when a player stops. I have tried using Humanoid:GetState() but it just keeps playing the animation, even after the player has stopped moving.

Code:

--LocalScript

local ReplicatedStorage = game:GetService('ReplicatedStorage')

local UserInputService = game:GetService('UserInputService')

local RequestType1 = ReplicatedStorage:WaitForChild('RequestType1')

local AnimationRequestType0, AnimationRequestType1, AnimationRequestType2 = ReplicatedStorage:WaitForChild('AnimationRequestType0'), ReplicatedStorage:WaitForChild('AnimationRequestType1'), ReplicatedStorage:WaitForChild('AnimationRequestType2')

local Players = game:GetService('Players')

local Player = Players.LocalPlayer

repeat

    wait()

until Player.Character

local RequestType = 0

local Moving = false

local Fired = false

local RequestType1KeyCode = Enum.KeyCode.Insert

local AnimationRequestType1KeyCode = Enum.KeyCode.W

local function FireServerInput(Input, gameProcessed)

    print(Input.KeyCode)

    if Input.KeyCode == RequestType1KeyCode then

        RequestType1:FireServer(Player)

        Fired = true

        RequestType = 1

    elseif RequestType == 1 and Fired and Player.Character.Humanoid:GetState() == Enum.HumanoidStateType.RunningNoPhysics and Player.Character.Humanoid.Running then

        if Input.KeyCode == AnimationRequestType1KeyCode and Player.Character.Humanoid.WalkSpeed > 0 then

            print(Input.KeyCode)

            AnimationRequestType1:FireServer()

            Moving = true

        end

    end

    if Moving and Player.Character.Humanoid:GetState() == Enum.HumanoidStateType.PlatformStanding then

        AnimationRequestType0:FireServer()

        Moving = false

    end

end

UserInputService.InputBegan:Connect(FireServerInput)

I am not really that skilled with Humanoid States, so if there's any state, or any event for when a player's character is standing still, please let me know along with whatever is wrong with my code. Thank you.