Why is this script not adding a sound to PlayerGui when player resets?

Why is this script not working properly

The script is in StarterCharacterScripts and it is a localscript.

In the script, a new Sound should be added to the player whenever the player resets.

Any help is greatly appreciated!

Here is the coding for the script:

local Player = game.Players.LocalPlayer

if Player.PlayerGui:FindFirstChild("SoundFixGui"):FindFirstChild("BGM") ~= nil then
	--Do Nothing
	else
		local BackgroundMusic = Instance.new("Sound")
		BackgroundMusic.Parent = Player:FindFirstChild("PlayerGui"):FindFirstChild("SoundFixGui")
		BackgroundMusic.Name = "BGM"
		BackgroundMusic.Looped = true
		BackgroundMusic.SoundId = "rbxassetid://256165333"
		BackgroundMusic:Play()
end

script:Destroy()