How would I save a table using async's?

I am making a datastore that stores a table of mutiple values. I have the player leave with a test table I set and I get no error. When I enter back in the game I get the message saying "no data found" when I clearly used setasync with a table. What am I doing wrong?

local DSS =  game:GetService("DataStoreService")
local MainStore = DSS:GetDataStore("MainStore")
local DataTable = {}
local defaultTable = {0,0,0,false,false}

game:GetService("Players").PlayerAdded:Connect(function(player)
	
	-- create folders
	local leaderstats = Instance.new("Folder",player)
	leaderstats.Name = "leaderstats"
	
	local PlayerStats = Instance.new("Folder",leaderstats)
	PlayerStats.Name = "PlayerStats"
	
	local Achievements = Instance.new("Folder",leaderstats)
	Achievements.Name = "Achievements"
	
	--create player stats
	local Rank = Instance.new("IntValue",PlayerStats)
	Rank.Name = "Rank"
	
	local Experience = Instance.new("IntValue",PlayerStats)
	Experience.Name = "Experience"
	
	local Coins = Instance.new("IntValue",PlayerStats)
	Coins.Name = "Coins"
	
	local FirstTimePlaying = Instance.new("BoolValue",PlayerStats)
	FirstTimePlaying.Name = "FirstTimePlaying"
	
	--create achievements
	local CompletedTutorial = Instance.new("BoolValue",Achievements)
	CompletedTutorial.Name = "CompletedTutorial"

	--generate the key
	local key = "player-"..player.UserId
	
	--load the data from the table
	local success,err = pcall(function()
		local data = MainStore:GetAsync(key)
		if data then
			DataTable[1] = data[1]
		else
			DataTable = defaultTable
			print("no data found")
		end
	end)
	
	if err then
		print("error loading data")
	end
		
end)

game:GetService("Players").PlayerRemoving:Connect(function(player)
	
	--generate the key
	local key = "player-"..player.UserId
	DataTable = {6,7,56,true,true}
	
	--save the data
	local success,err = pcall(function()
		MainStore:SetAsync(key,DataTable)
	end)
	if err then
		print("error saving data")
	end
end)