What to do with my old game if the Roblox's Table-saving DataStore is deprecated?

So I have an old survival game back in 2017, I've created a DataStore script that saves tables:

You may have the full script here:

local Storage = game:GetService('ReplicatedStorage')
local ItemsFolder = Storage:WaitForChild('ItemsFolder')
local DataStoreService = game:GetService("DataStoreService")
local InventoryData = DataStoreService:GetDataStore("PlayerInventory")
local ItemsList = {}
for i,item in pairs(ItemsFolder:GetChildren()) do
	table.insert(ItemsList,item.Name)
end

game.Players.PlayerAdded:connect(function(plr)
	local scope = "Player_"..plr.UserId
	local InvFolder = Instance.new('Folder')
	InvFolder.Name = "InventoryFolder"
	local PlrItemObj = {}
	
	for i=1,#ItemsList do
		local Newvalue = Instance.new("IntValue")
		Newvalue.Name = ItemsList[i]
		table.insert(PlrItemObj,Newvalue)
		Newvalue.Parent = InvFolder
	end
	
	local DataFile = InventoryData:GetAsync(scope)
	
	if DataFile then
		for i=1,#PlrItemObj do
			print("Name: "..PlrItemObj[i].Name.." / Value:"..PlrItemObj[i].Value)
			PlrItemObj[i].Value = DataFile[i]
		end
	else
		local DataToSave = {}
		for i=1,#PlrItemObj do
			table.insert(DataToSave,PlrItemObj[i].Value)
		end
		InventoryData:SetAsync(scope,DataToSave)
	end
	
	InvFolder.Parent = plr
end)

At the line "PlrItemObj[i].Value = DataFile[i]"

I get this error "attempt to index local 'DataFile' (a number value)"

So is there another way to fix the DataStore?

P/s: If you're suggesting to save the data values one by one then you can't since the game have more than 100 items then it would throttle the firing due to limited DataStoreService requests.