Why does this data store script not work? (I figured it out myself, Thanks for the help though!)

So today I read up on Data Store and watched some videos on Youtube. I made a script using PeasFactory's tutorial on Youtube and I am wondering why it isn't working for my game? I have altered the values to suit my needs, but I think in doing so I messed it up and I cannot find what is wrong. I want the script to save 'SpiritCoins' (being the currency of my game) and 'Survivals' (the number of times people survive my disasters/minigames).

local DataStore = game:GetService("DataStoreService"):GetDataStore("SpiritCoinsAndSurvivals")

game.Players.PlayerAdded:connect(function(player)

    local stats = Instance.new("IntValue", player)
    stats.Name = "leaderstats"

    local coins = Instance.new("IntValue", player)
    coins.Name = "SpiritCoins"

    local survivals = Instance.new("IntValue", player)
    survivals.Name = "Survivals"

    local key = "player-"..player.userId

    local savedValues = DataStore:GetAsync(key)

    if savedValues then
        --Save format: {coins, survivals}
        coins.Value = savedValues[1]
        survivals.Value = savedValues[2]
    else
        local valuesToSave = {coins.Value, survivals.Value}
        DataStore:SetAsync(key, valuesToSave)
    end
end)

And here is the script for when the player leaves the game so it saves the data.

local DataStore = game:GetService("DataStoreService"):GetDataStore("SpiritCoinsAndSurvivals")

game.Players.PlayerRemoving:connect(function(player)

    local key = "player-"..player.userId

    --Save key: {coins, survivals}
    local valuesToSave = {player.leaderstats.SpiritCoins.Value, player.leaderstats.Survivals.Value}
    DataStore:SetAsync(key, valuesToSave)

end)

Though I have read on the wiki an UpdateAsync is a good thing to have. I will need to learn about that and add it to the leaving script. If there is anything I left out, please don't hesitate and keep in mind I am still a beginner level scripter.