How do i set a default value in leaderstats WITH a datastore?

Hi! So I got a script to save my leaderstats but I don't have a default value set and I want the default value to be set for new players. Here is my script:

local ds = game:GetService("DataStoreService")
local dss = ds:GetDataStore("CoolDataStore")

game.Players.PlayerAdded:Connect(function(player)
	local leaderstats = Instance.new("Folder")
	leaderstats.Name = "leaderstats"
	leaderstats.Parent = player
	
	local stage = Instance.new("IntValue")
	stage.Name = "Stage"
	stage.Parent = leaderstats

	
	local data 
	local success, errormessage = pcall(function()
		data = dss:GetAsync(player.UserId.."-stageNumber") 
	end)
	if success then 
		stage.Value = data
			print("kool aid somebody loaded data")
	end
end)

game.Players.PlayerRemoving:Connect(function(player)
	local success, errormessage = pcall(function()
		dss:SetAsync(player.UserId.."-stageNumber", player.leaderstats.Stage.Value)
	end)
	if success then
		print("Data Stored Successfully")
	else
		print(errormessage)
	end
end)

Can somebody please help me on how to set a default value? i tried myself and it did not work .