How to ensure the DataStore is properly Loading Saved Data?

Hello all,

I have a DataStore for storing my BoolValues. The BoolValues are nested underneath this ServerScript. My DataStore should do the following:

1. Create new Data for the player upon the first time they enter.
2. Load the Saved Data for returning players.
3. Save Data.

My DataStore successfully creates new data, and saves data. But its creating new data each time the player enters the game. Can't have this. x_x I've marked what each function is suppose to do in the script below, and I've also marked where the errors appears to be happening:

 function dataStoreAttempt(dataStoreFunction)

and possibly: function loadData(Player)

I've added Pcalls that were not there before, and I'm not entirely sure if I'm using GetAsync and UpdateAsync properly.

Here is my code:

    local module = {}
    local DataStoreService = game:GetService("DataStoreService")
    local InventoryItems = DataStoreService:GetDataStore("XXXX")
    local ToolGiverCheck = require(script.ToolGiverCheck) -- This is my script nested under this one that provides all the BoolValues.
    datastore_success = {}
    hasValues = require(script.HasValues)
    
    AUTOSAVE_INTERVAL = 120
    DATASTORE_RETRIES = 3
    Creating the Table for the DataStore to draw from, where my BoolValues are housed:
    
    function createData()
    	local data = {}
    	data.tbl_1 = {}
    	data.tbl_2 = {}
    	for x = 1, #hasValues do
    		table.insert(data.tbl_1, hasValues[x])
    		data[hasValues[x]] = false
    	end
    	return data
    end
    --First attempt to check the Data when the Player arrives, which is where the error seems to be:
    
    function dataStoreAttempt(dataStoreFunction)
    	local tries = 0
    	local success = false
    	local data = nil
    	repeat
    		tries = tries + 1
    		success = pcall(function() data = dataStoreFunction() end)
    		if not success then
     wait(1) 
    print('ERROR AT ATTEMPT TO RECALL')
     end
        	until tries == DATASTORE_RETRIES or success
        	return success, data
        end
    --Where the Data is Loaded for the Player:
    
       function loadData(Player)
        	local Key = "PlayerIdNumber-"..Player.UserId.."_ToolItemsXXXX"
        	local InvData = Player:WaitForChild("Inventory")
        	local  success, err = pcall(function() data = dataStoreAttempt() end)
        	dataStoreAttempt(function()
        		 return InventoryItems:GetAsync(Key)
        	end)
        	if success then
        		if not data then
        			data = createData()
        			print("Inventory new data successfully created for player '" .. Player.Name .. "'  (" .. Player.UserId .. ")")
        		else
        			for x = 1, #data.tbl_1 do
        				local value = data.tbl_1[x]
        				local inv_value = InvData:WaitForChild(value)
        				inv_value.Value = data.tbl_2[value]
        			end
        				
        			print("Inventory data successfully loaded for player '" .. Player.Name .. "'  (" .. Player.UserId .. ")")
        		end
        		datastore_success["id_"..Player.UserId] = true
        	else
        		print("Inventory data FAILED to load for player '" .. Player.Name .. "'  (" .. Player.UserId .. ")")
        	end
        end
    --Where the Data saves for the Player, this appears to be working:
    
    function saveData(Player)
    	if datastore_success["id_"..Player.UserId] then
    		local Key = "PlayerIdNumber-"..Player.UserId.."_ToolItemsXXXX"
    		local InvData = Player:WaitForChild("Inventory")
    		local data = createData()
    		for x = 1, #data.tbl_1 do
    			local value = data.tbl_1[x]
    			local inv_value = InvData:WaitForChild(value)
    			data.tbl_2[value] = inv_value.Value
    		end
    		
    	local  success = pcall(function() data = dataStoreAttempt() end)
    	dataStoreAttempt(function()
    		 return InventoryItems:UpdateAsync(Key,function(data)
    	
    		
    		if not success then
    			print("Inventory data FAILED to save for player '" .. Player.Name .. "'  (" .. Player.UserId .. ")")
    		else
    			print("Inventory data successfully saved for player '" .. Player.Name .. "'  (" .. Player.UserId .. ")")
    		end
    	end)
    end)
    end
    end
    --The Player Connecting/Removing/Spawning, this all appears to have been working fine too:
    
    game.Players.PlayerAdded:Connect(function(Player) -- Inventory
    	local tnew = Instance.new
    	local ts = tnew("Folder")
    	ts.Name = "Inventory"
    	ts.Parent = Player
    	for x = 1, #hasValues do
    		local tool = tnew("BoolValue")
    		tool.Name = hasValues[x]
    		tool.Value = false
    		tool.Parent = ts
    	end
    	loadData(Player)
    	repeat wait() until Player.Character
    end)
    
    game.Players.PlayerRemoving:Connect(function(Player)
    	saveData(Player)
    	datastore_success["id_"..Player.UserId] = nil
    end)
     
    spawn(function()
        while wait(AUTOSAVE_INTERVAL) do
            for i, Player in pairs (game:GetService("Players"):GetChildren()) do
                print("Inventory data Auto-saving for " .. Player.Name .. " .")
                saveData(Player) 
            end  
        end  
    end) 
 return module

How datastoredFunction() use to appear, before I started messing with the Pcalls, in response to the comment below:

function dataStoreAttempt(dataStoreFunction)
	local tries = 0
	local success = false
	local data = nil
	repeat
		tries = tries + 1
		success = pcall(function() data = dataStoreFunction() end)
		if not success then wait(1) end
	until tries == DATASTORE_RETRIES or success
	return success, data
end
function loadData(Player)
	local Key = "PlayerIdNum-"..Player.UserId.."_ToolItemsForMW1928374123123"
	local InvData = Player:WaitForChild("Inventory")
	local success, data = dataStoreAttempt(function()
		 return InventoryItems:GetAsync(Key)
	end)
	if success then
		if not data then
			data = createData()
			print("Inventory new data successfully created for player '" .. Player.Name .. "'  (" .. Player.UserId .. ")")
		else
			for x = 1, #data.tbl_1 do
				local value = data.tbl_1[x]
				local inv_value = InvData:WaitForChild(value)
				inv_value.Value = data.tbl_2[value]
			end
				
			print("Inventory data successfully loaded for player '" .. Player.Name .. "'  (" .. Player.UserId .. ")")
		end
		datastore_success["id_"..Player.UserId] = true
	else
		print("Inventory data FAILED to load for player '" .. Player.Name .. "'  (" .. Player.UserId .. ")")
	end
end

Any assistance here is very much appreciated. Thank you. :)