Can Somebody help me Understand how to save,read and update Tables in DataStore?

My Datastore is organized like:Datastore Name>Scope>PlayerId as key>Actual Data. So Key for each players data is their Id.

I know that When you set the key like I do it creates an empty list. What I'm having trouble with is reading this data and rewriting it.

I tried using Http Service and JSONDecode, JSONEncode but that way it saves one string and to access that you have to Decode and then take values from table manually. I just need help to know how to save tables correctly and do it in best way

This is my script which doesn't even work properly.

local datastore = game:GetService("DataStoreService")
hs = game:GetService("HttpService")
default_data = {["Money"] = 4000,
	["Houses"] = {
		["Standard"] = false,
		["Normal"] = false,
		["High"] = false,
		["Lux"] = false
	}
	}
	
game.Players.PlayerAdded:connect(function(plr)
	ds1 = datastore:GetDataStore("GameData123","01")
	
	
	local leaderstats = Instance.new("Folder",plr)
	leaderstats.Name = "leaderstats"
	local money = Instance.new("IntValue", leaderstats)
	money.Name = "Coins"
	
	 
	money.Value = ds1:GetAsync(tostring(plr.UserId))[1] or 0
	
	if money.Value == 0 then
		moneyy.Value = 4000
		ds1:SetAsync(tostring(plr.UserId), default_data)
	
	end

	
	
	player_money = ds1:GetAsync(tostring(plr.UserId))[1]--I try to get money
	player_houses = ds1:GetAsync(tostring(plr.UserId))[2]--I try to get Houses as table
	
	function Update(money, standard, normal, high, lux)
		money = money.Value
		local new_value = {
			["Money"] = money,
			["Houses"] = {
				["Standard"] = standard,
				["Normal"] = normal,
				["High"] = high,
				["Lux"] = lux
				}
			}		
		return new_value 
	end
	
	
	moneyy.Changed:connect(function()
		print("Changed")
		ds1:UpdateAsync(tostring(plr.UserId), Update(player_money, player_houses[1], player_houses[2], player_houses[3], player_houses[4]))--Then I use this values here.
	end)
	
	
end)