Game does not save data when leaving the game?

game.Players.PlayerAdded:connect(function(player)
		local datastore = game:GetService("DataStoreService"):GetDataStore(player.Name.."Stats")
	
	player:WaitForChild("Data")
	wait(1)
	local stats = player:FindFirstChild("Data"):GetChildren()
	for i = 17, #stats do			
	stats[i].Value = datastore:GetAsync(stats[i].Name)
	print("stat numba "..i.." has been found")
		end
end)


-------------------THIS IS ALL GOOD ^^^



game.Players.PlayerRemoving:connect(function(player)
	local datastore = game:GetService("DataStoreService"):GetDataStore(player.Name.."Stats")

local statstorage = player:FindFirstChild("Data"):GetChildren()
for i =  17, #statstorage do
	datastore:SetAsync(statstorage[i].Name, statstorage[i].Value)
	print("saved data number "..i)
	
end
print("Stats successfully saved")	
end)

I need this script to save all of my data when leaving.

This is the data if it's needed for helping:

game.Players.PlayerAdded:Connect(function(Plr)
	local stats = Instance.new("Folder", Plr)
	stats.Name = "Data"
	--- Level System
	local Levels = Instance.new("IntValue", stats)
	Levels.Name = "Levels"
	Levels.Value = 1
	local Exp = Instance.new("IntValue", stats)
	Exp.Name = "Exp"
	Exp.Value = 0
	local ExpNeed = Instance.new("IntValue", stats)
	ExpNeed.Name = "ExpNeed"
	ExpNeed.Value = 200
	--- Money System
	local Beli = Instance.new("IntValue", stats)
	Beli.Name = "Beli"
	Beli.Value = 0
	local Bounty = Instance.new("IntValue", stats)
	Bounty.Name = "Bounty"
	Bounty.Value = 1
	--- Stats Text
	local HealthP = Instance.new("IntValue", stats)
	HealthP.Name = "HealthP"
	HealthP.Value = 0
	local MeleeP = Instance.new("IntValue", stats)
	MeleeP.Name = "MeleeP"
	MeleeP.Value = 0
	local SpeedP = Instance.new("IntValue", stats)
	SpeedP.Name = "SwordP"
	SpeedP.Value = 0
	local DevilFruitP = Instance.new("IntValue", stats)
	DevilFruitP.Name = "DevilFruitP"
	DevilFruitP.Value = 0
	--- Stats System
	local Points = Instance.new("IntValue", stats)
	Points.Name = "Points"
	Points.Value = 0
	local MaxHealth = Instance.new("IntValue", stats)
	MaxHealth.Name = "MaxHealth"
	MaxHealth.Value = 0
	local Melee = Instance.new("IntValue", stats)
	Melee.Name = "Melee"
	Melee.Value = 0
	local Speed = Instance.new("NumberValue", stats)
	Speed.Name = "Sword"
	Speed.Value = 0
	local DevilFruit = Instance.new("IntValue", stats)
	DevilFruit.Name = "DevilFruit"
	DevilFruit.Value = 0
	--- Sword
	local Sword = Instance.new("StringValue", stats)
	Sword.Name = "SwordOwned"
	Sword.Value = "None"
	--- Melee
	local Melee = Instance.new("StringValue", stats)
	Melee.Name = "MeleeOwned"
	Melee.Value = "Combat"
	--- CurrentBoat
	local CurrentBoat = Instance.new("StringValue", stats)
	CurrentBoat.Name = "CurrentBoat"
	CurrentBoat.Value = "None"
	
end)

game.Players.PlayerAdded:Connect(function(Plr)
	wait(.1)
	local Exp = Plr.Data.Exp
	local Levels = Plr.Data.Levels
	local ExpNeed = Plr.Data.ExpNeed
	local Points = Plr.Data.Points
	
	while wait() do
            if Exp.Value >= (100 * (Levels.Value + 1)) and Levels.Value <= 399 then
			Levels.Value = Levels.Value + 1
			Points.Value = Points.Value + 3
			Exp.Value = Exp.Value - ExpNeed.Value
			ExpNeed.Value = ExpNeed.Value + 100
			game.ReplicatedStorage.LevelSystem.LevelUpGui:FireClient(Plr)
		end
	end
end)

I think you'll need to enable API servers in your game setting. If that doesn't fix it then I don't know what will because the script is fine