The function to save my data doesn't work, help?

This piece of code from a big block seems to be the problem. It doesn't print out "Save 2"

local function SaveData(player)
	if player.userId < 0 then return end
	player:WaitForChild("leaderstats")
	wait()
	local leaderstats = {}
	for i, stat in pairs(player.leaderstats:GetChildren()) do
		if not stat:IsA("Folder") then
			print("Save 1")
			table.insert(leaderstats, {stat.Name, stat.Value})
		end
	end
	player:WaitForChild("leaderstats"):WaitForChild("Rebirth")
	wait()
	for i, stat in pairs(player.leaderstats.Rebirths:GetChildren()) do
		print("Save 2")
		table.insert(leaderstats, {stat.Name, stat.Value})
	end
	leaderboardData:SetAsync(player.userId, leaderstats)
	Print("Saved "..player.Name.."'s data")
end

leaderstats folder: https://drive.google.com/file/d/1j1v2ZnDaCvP1ifK-H1XgtWIJffGFppzW/view?usp=sharing

I just got confused with the value "Rebirths" and the folder "Rebirth" sry everybody

in for i,v (save2) you have leaderstats.Rebirths but before for i,v you have WaitForChild("Rebirth") and not Rebirths

or

use this script and put all in 1 folder

local DataStoreService = game:GetService("DataStoreService")
local playerData = DataStoreService:GetDataStore("PlayerData")

game:GetService("Players").PlayerAdded:Connect(function(player)
	local playerUserId = "Player_"..player.UserId
	local data = playerData:GetAsync(playerUserId)

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

	local XP = Instance.new("NumberValue", Folder)
	XP.Name = "XP" -- this is example

	local LVL = Instance.new("NumberValue", Folder)
	LVL.Name = "Levels"

	local XPN = Instance.new("BoolValue", Folder)
	XPN.Name = "XPN"

	if data then
		XP.Value = data["XP"]
		LVL.Value = data["Levels"]
		XPN.Value = data["XPN"]
	else
		XP.Value = 0
		LVL.Value = 0
		XPN.Value = true
	end
end)

local function create_table(player)
	local player_stats = {}
	for _, stat in pairs(player.leaderstats:GetChildren()) do
		player_stats[stat.Name] = stat.Value
	end
	return player_stats
end

game:GetService("Players").PlayerRemoving:Connect(function(player)
	local player_stats = create_table(player)
	local success, err = pcall(function()
		local playerUserId = "Player_"..player.UserId
		playerData:SetAsync(playerUserId, player_stats)
	end)
	if not success then
		warn("Could not save data")
	end

end)