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.