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 :)