How would I save a table to a datastore?

I am tryng to save mutltiple values that I create when the player's enter. I can save a single value just fine but I realized I need a table to store other values to. I can run the script with no error but it prints the default values instead of the one's from my last playing session. Ideas?

--Get The Service's
local replicatedStorage = game:GetService("ReplicatedStorage")
local timePlayedValue = replicatedStorage:WaitForChild("TimePlayedValue")
local totalTimeValue = replicatedStorage:WaitForChild("TotalTimeValue")
local httpsService = game:GetService("HttpService")
local dsService = game:GetService("DataStoreService")
local mainStore = dsService:GetDataStore("MainDataStore")

--create player data
game:GetService("Players").PlayerAdded:Connect(function(plr)
	
	--create folders
	
	local leader = Instance.new("Folder",plr)
	leader.Name = "leaderstats"
	
	local achievementsFolder = Instance.new("Folder",leader)
	achievementsFolder.Name = "Achievements"
	
	local gameplayStats = Instance.new("Folder",leader)
	gameplayStats.Name = "GameplayStats"
	
	local playerStats = Instance.new("Folder",leader)
	playerStats.Name = "PlayerStats"
	
	
	--create achievements Values
	
	CompletedTutorial = Instance.new("BoolValue",achievementsFolder)
	CompletedTutorial.Name = "CompletedTutorialAchievement"
	CompletedTutorial.Value = false
	
	
	--create gameplay values
	
	CompletedMissions = Instance.new("IntValue",gameplayStats)
	CompletedMissions.Name = "CompletedMissions"
	CompletedMissions.Value = 0
	
	FailedMissions = Instance.new("IntValue",gameplayStats)
	FailedMissions.Name = "FailedMissions"
	FailedMissions.Value = 0
	
	PreviousMission = Instance.new("StringValue",gameplayStats)
	PreviousMission.Name = "PreviousMission"
	PreviousMission.Value = "No Missions Attempted"
	
	TimesDied = Instance.new("IntValue",gameplayStats)
	TimesDied.Name = "TimesDied"
	TimesDied.Value = 0
	
	TrapsAvoided = Instance.new("IntValue",gameplayStats)
	TrapsAvoided.Name = "TrapsAvoided"
	TrapsAvoided.Value = 0
	
	TrapsFailed = Instance.new("IntValue",gameplayStats)
	TrapsFailed.Name = "TrapsFailed"
	TrapsFailed.Value = 0
	
	
	--create player values
	
	Coins = Instance.new("IntValue",playerStats)
	Coins.Name = "Coins"
	Coins.Value = 0
	
	
	local currentDay = os.date("*t").day
	local currentMonth = os.date("*t").month
	local currentYear = os.date("*t").year
	
	local dateJoined = (currentDay.."/"..currentMonth.."/"..currentYear)
	
	DateFirstJoined = Instance.new("StringValue",playerStats)
	DateFirstJoined.Name = "DateFirstJoined"
	DateFirstJoined.Value = dateJoined
	
	Rank = Instance.new("StringValue",playerStats)
	Rank.Name = "Rank"
	Rank.Value = "Junior Assistant"
	
	totalTime = Instance.new("IntValue",playerStats)
	totalTime.Name = "TotalTimePlayed"
	totalTime.Value = 0
	
	timePlayed = Instance.new("IntValue",playerStats)
	timePlayed.Name = "TimePlayed"
	timePlayed.Value = 0
	
	Experience = Instance.new("IntValue",playerStats)
	Experience.Name = "Experience"
	Experience.Value = 0
	
	--load the data
	local success, err = pcall(function()
		local data = mainStore:GetAsync(plr.UserId) 
		if data then
			
			--gameplay values
			CompletedMissions.Value = data[1]
			FailedMissions.Value = data[2]
			PreviousMission.Value = data[3]
			TimesDied.Value = data[4]
			TrapsAvoided.Value = data[5]
			TrapsFailed.Value = data[6]
			
			--player stats value
			Coins.Value = data[7]
			DateFirstJoined.Value = data[8]
			Rank.Value = data[9]
			totalTime.Value = data[10]
			timePlayed.Value = data[11]
			Experience.Value = data[12]
			
			print(CompletedMissions.Value, FailedMissions.Value, PreviousMission.Value, TimesDied.Value, TrapsAvoided.Value, TrapsFailed.Value, Coins.Value, DateFirstJoined.Value, Rank.Value, totalTime.Value, timePlayed.Value, Experience.Value)
			
		else
			print("no data")
		end
	end)
	if err then
		print("error loading data")
	end
end)

--Increment Time Values
incrementor = coroutine.create(function()
	while wait(1) do
		timePlayed.Value = timePlayedValue.Value + 1
		totalTime.Value = totalTimeValue.Value + 1
	end
end)

coroutine.resume(incrementor)

game:GetService("Players").PlayerRemoving:Connect(function(player)
	
	local DataToSave = {CompletedMissions.Value, FailedMissions.Value, PreviousMission.Value, TimesDied.Value, TrapsAvoided.Value, TrapsFailed.Value, 
	Coins.Value, DateFirstJoined.Value, Rank.Value, totalTime.Value, timePlayed.Value, Experience.Value}
	
	local success, err = pcall(function()
		mainStore:SetAsync(player.UserId,DataToSave)
	end)
	if err then
		print("error saving")
	end
end)

I would use HttpService:JSONEncode and HttpService:JSONDecode. You may need HTTP requests on, but I am not sure. Examples:

print(game:GetService("HttpService"):JSONEncode({"hi","Hello","HOI!"}))
--["hi","Hello","HOI!"]

,

print(game:GetService("HttpService"):JSONDecode'["hi","Hello","HOI!"]')
--table: 0x07cc1b5448ca7e84
--unpacking this table results in 'hi Hello HOI!' but the table is just {"hi","Hello","HOI!"}).

,

print(unpack(game:GetService("HttpService"):JSONDecode'["hi","Hello","HOI!"]'))
--hi Hello HOI!
-- I wouldn't use unpack, I used it here just to show you the values.

. To get the table you could just do

local returndata = '["hi","Hello","HOI!"]'--This would be the data store output.
local table = game:GetService("HttpService"):JSONDecode(returndata)

Happy Scripting!