datastore not saving data?

so in my simulator game im doing the tutorial from alvin blox everything is working but the datastore wont save please help me:

local serverStorage = game:GetService("ServerStorage")
local datastore = game:GetService("DataStoreService"):GetDataStore("PlayerSave3")

game.Players.PlayerAdded:Connect(function(player)
		
		
		local leaderstats = Instance.new("Folder")
		leaderstats.Name = "leaderstats"
		leaderstats.Parent = player
		
		local strength = Instance.new("NumberValue")
		strength.Name = "Strength"
		strength.Parent = leaderstats
		
		local rebirths = Instance.new("IntValue")
		rebirths.Name = "Rebirths"
		rebirths.Parent = leaderstats
		
		local dataFolder = Instance.new("Folder")
		dataFolder.Name = player.Name
		dataFolder.Parent = serverStorage.RemoteData
		
		local debounce = Instance.new("BoolValue")
		debounce.Name = "Debounce"
		debounce.Parent = dataFolder
		
		local strengthdata, rebirthdata
		
		local success, errormessage = pcall(function()
			strengthdata = datastore:GetAsync("strength-"..player.UserId)
			rebirthdata = datastore:GetAsync("rebirths-"..player.UserId)
		end)
		
		if success then
			if strengthdata then
				strength.Value = strengthdata
				rebirths.Value = rebirthdata
			end
		end
		
end)

game.Players.PlayerRemoving:Connect(function(player)
	 local success, errormessage = pcall(function()
		datastore:SetAsync("strength-"..player.UserId,player.leaderstats.Strength.Value)
		datastore:SetAsync("rebirths-"..player.UserId,player.leaderstats.Rebirths.Value)
	end)
end)