Datastore not recognizing when a value updates?

My datastore does not recognize when a player's leaderstat value (e.g. Money) changes. I cannot see the issue with it however and cannot figure out what is wrong (and I know that doing amount.Changed isn't the smartest thing but I can fix that later). Can anyone more experienced take a look? Here's the datastore script:

local DataStore = game:GetService("DataStoreService")
local DS1 = DataStore:GetDataStore("StatsDataStore")

game.Players.PlayerAdded:Connect(function(player)
	
	local leader = Instance.new("Folder", player)
	leader.Name = "leaderstats"
	
	local amount = Instance.new("StringValue", leader)
	amount.Name = "yeahs"
	
	amount.Value = DS1:GetAsync(player.UserId) or 0
	DS1:SetAsync(player.UserId, amount.Value)
	amount.Changed:connect(function()
		print("Saving Data...")
		DS1:SetAsync(player.UserId, amount.Value)
		print(player.Name.."'s Data of "..amount.Value.." "..amount.Name.." has been saved.")
	end)
end)

game.Players.PlayerRemoving:Connect(function(player)
	print("Saving Data...")
	DS1:SetAsync(player.UserId, player.leaderstats.yeahs.Value)
	print(player.Name.."'s Data of "..player.leaderstats.yeahs.Value.." "..player.leaderstats.yeahs.Name.." has been saved.")
end)

And here is the script that gives the player "yeahs" (my game's currency):

	local yeahs = game.Players.LocalPlayer.leaderstats.yeahs
	local sound = Instance.new("Sound", game.StarterGui)
	sound.Name = "yeet"
	sound.SoundId = "doesntmatterfornow"
	sound.Looped = true
	
	sound.DidLoop:Connect(function(soundId, numOfTimesLooped)
		yeahs.Value = yeahs.Value + 1
		--print("number "..tostring(numOfTimesLooped))
	end)

	sound:Play()

The datastore script is stored in ServerScriptService and the script which adds yeahs to a player's total is in a screen gui as it is tethered to the intro I made for the game. (In case you need to know this.)

EDIT: Also the script which adds "yeahs" is a LocalScript and this place does has FE on.

You cant change a server created value from the client. You either need to change the value from the server(a regular script), or use remote events to change the value. This is due to filtering enabled. There are a few issues with the datastore script, namely using .Changed, but otherwise that should fix your issue.