How do I save these leaderstats?

Hello! I'm currently making a game that requires leaderstats, (Trolls, Gems, Rebirths) and I am attempting to find a way to save these. I have tried watching some tutorials/youtube videos, yet none of them work.

Here's my leaderstats script:

game.Players.PlayerAdded:Connect(function(Player)

	if not Player:FindFirstChild("leaderstats") then
		local Folder = Instance.new("Folder" ,Player)
		Folder.Name = "leaderstats"
	end

	local Folder = Player:WaitForChild("leaderstats" ,5)

	local Value1 = Instance.new("IntValue",Folder)
	local Value2 = Instance.new("IntValue",Folder)
	local Value3 = Instance.new("IntValue",Folder)


	Value3.Name = "Trolls"
	Value1.Name = "Gems"
	Value2.Name = "Rebirths"
	
end)

Any help or advice would be heavily appreciated!

Thanks

Here is a simply datastore system I did the first 2 for you. For practise try doing the 3rd.

Old Answer Sorry I made some mistypes this should work now I tested it btw Script:

local DSS = game:GetService("DataStoreService")

local Troll = DSS:GetDataStore("TrollData")

local Gems= DSS:GetDataStore("GemsData")--Duplicate this and change name to rebirths



game.Players.PlayerAdded:Connect(function(player)

	local leaderstats = Instance.new("Folder", player)

	leaderstats.Name = "leaderstats"



	local Troll = Instance.new("IntValue", leaderstats)

	Troll.Name = "Troll"



	local gems = Instance.new("IntValue", leaderstats)--Duplicate this and change name to rebirths

	gems.Name = "Gems"--Duplicate this and change name to rebirths



	local playerId = "Player_"..player.UserId



	local Trolldata

	local Gemsdata--Duplicate this and change name to rebirths

	local success, errormessage = pcall(function()

		Trolldata = Troll:GetAsync(playerId)

		Gemsdata = Gems:GetAsync(playerId)--Duplicate this and change name to rebirths

	end)



	if success then

		Troll.Value = Trolldata

		Gems.Value = Gemsdata--Duplicate this and change name to rebirths

	end

end)



game.Players.PlayerRemoving:Connect(function(player)

	local playerId = "Player_"..player.UserId



	local Trolldata = player.leaderstats.Troll.Value

	local Gemsdata = player.leaderstats.Gems.Value--Duplicate this and change name to rebirths



	local success, errormessage = pcall(function()

		Troll:SetAsync(playerId, Trolldata)

		Gems:SetAsync(playerId, Gemsdata)--Duplicate this and change name to rebirths

	end)



	if success then

		print("Saved")

	else

		print("There was an error")

		warn(errormessage)

	end

end)

Hope this helps!!

Updated Script

local DSS = game:GetService("DataStoreService")

local Troll = DSS:GetDataStore("TrollData")

local Gems= DSS:GetDataStore("GemsData")--Duplicate this and change name to rebirths

local Rebirth = DSS:GetDataStore("RebirthData")


game.Players.PlayerAdded:Connect(function(player)

	local leaderstats = Instance.new("Folder", player)

	leaderstats.Name = "leaderstats"



	local Troll = Instance.new("IntValue", leaderstats)

	Troll.Name = "Troll"



	local gems = Instance.new("IntValue", leaderstats)--Duplicate this and change name to rebirths

	gems.Name = "Gems"--Duplicate this and change name to rebirths

local Rebirth = Instance.new("IntValue", leaderstats)

	Rebirth.Name = "Rebirth"

	local playerId = "Player_"..player.UserId



	local Trolldata

	local Gemsdata--Duplicate this and change name to rebirths
local Rebirthdata

	local success, errormessage = pcall(function()

		Trolldata = Troll:GetAsync(playerId)

		Gemsdata = Gems:GetAsync(playerId)--Duplicate this and change name to rebirths
Rebirthdata = Rebirth:GetAsync(playerId)
	end)



	if success then

		Troll.Value = Trolldata

		Gems.Value = Gemsdata--Duplicate this and change name to rebirths
		Rebirth.Value = Rebirthdata
	end

end)



game.Players.PlayerRemoving:Connect(function(player)

	local playerId = "Player_"..player.UserId



	local Trolldata = player.leaderstats.Troll.Value

	local Gemsdata = player.leaderstats.Gems.Value--Duplicate this and change name to rebirths
	local Rebirthdata = player.leaderstats.Rebirth.Value


	local success, errormessage = pcall(function()

		Troll:SetAsync(playerId, Trolldata)

		Gems:SetAsync(playerId, Gemsdata)--Duplicate this and change name to rebirths
Rebirth:SetAsync(playerId, Rebirthdata)
	end)



	if success then

		print("Saved")

	else

		print("There was an error")

		warn(errormessage)

	end

end)

Doesn't seem to work. It has red lines under every time it says TrollData, GemsData and RebirthsData (the new one I made for rebirths). I don't know why. An answer would be appreciated