datastore not working on mutiple items?

So in my game you collect stars but I need to save what stars you collected specifically. I have no idea why it doesn't work, sometimes the first star is marked as collected when the game is launched but when you collect more stars it doesn't work at all. When you die you also lose them. here's the code:

local datastore = game:GetService("DataStoreService")
local ds = datastore:GetDataStore("StarSaveSystem")
local dsc = datastore:GetDataStore("CoinSaveSystem")

local star_ds = datastore:GetDataStore("starsSaveSystem")

local Players = game:GetService("Players")

Players.PlayerAdded:Connect(function(player)
	if game.Players:FindFirstChild(player.Name) then
		----create leaderstats
		local leaderboard = Instance.new("IntValue",game.Players)
		leaderboard.Parent = (game.Players[player.Name])
		leaderboard.Name = "leaderstats"
		
		--stars
		local stars = Instance.new("IntValue",leaderboard)
		stars.Name = "Stars"
		
		stars.Value = ds:GetAsync(player.UserId) or 0
		ds:SetAsync(player.UserId, stars.Value)
		
		--coins
		local coins = Instance.new("IntValue",leaderboard)
		coins.Name = "Coins"
		
		coins.Value = dsc:GetAsync(player.UserId) or 0
		dsc:SetAsync(player.UserId, coins.Value)
		
		--update save
		stars.Changed:connect(function()
			ds:SetAsync(player.UserId, stars.Value)
		end)
		
		coins.Changed:connect(function()
			dsc:SetAsync(player.UserId, coins.Value)
		end)
		
		----create player variables
		local HP = Instance.new("IntValue",game.Players)
		HP.Parent = (game.Players[player.Name])
		HP.Name = "HP"
		HP.Value = 3
		
		--load all collected stars
		local star_load = star_ds:GetAsync(player.UserId)
		if star_load then
			local sd = player.PlayerGui.Stars
			sd.star1.Value = star_load[1]
			sd.star2.Value = star_load[2]
			sd.star3.Value = star_load[3]
			sd.star4.Value = star_load[4]
			sd.star5.Value = star_load[5]
			sd.star6.Value = star_load[6]
		end
		local sd = player.PlayerGui.Stars
		local savetable = {
				sd.star1.Value,
				sd.star2.Value,
				sd.star3.Value,
				sd.star4.Value,
				sd.star5.Value,
				sd.star6.Value
		}
		star_ds:SetAsync(player.UserId, savetable)
		savetable.Changed:connect(function()
			star_ds:SetAsync(player.UserId, savetable)
		end)
	end
end)

game.Players.PlayerRemoving:Connect(function(player)
	local sd = player.PlayerGui.Stars
	local savetable = {
			player.PlayerGui.Stars.star1.Value,
			player.PlayerGui.Stars.star2.Value,
			player.PlayerGui.Stars.star3.Value,
			player.PlayerGui.Stars.star4.Value,
			player.PlayerGui.Stars.star5.Value,
			player.PlayerGui.Stars.star6.Value
	}
	star_ds:SetAsync(player.UserId, savetable)
end)

If you know how to fix it or even a better way to do it, please help me :)