Leaderboard Doesn't work with multiple players

Hello! I’m having issues with this code of where there is no errors but it doesn’t work with any more than one player. GUI is a part in my GlobalLeaderboard model by the way.
It’s a leaderboard system.

local DataStoreService = game:GetService("DataStoreService")
local MissionsLeaderboard = DataStoreService:GetOrderedDataStore("MissionsLeaderboard")

local function updateLeaderboard()
local success, errormessage = pcall(function()
		local Data = MissionsLeaderboard:GetSortedAsync(false, 3)
		local MissionsPage = Data:GetCurrentPage()
		for Rank, data in ipairs(MissionsPage) do
			local userName = game.Players:GetNameFromUserIdAsync(tonumber(data.key))
			local Name = userName
			local Missions = data.Value
			local isOnLeaderboard = false
			
			for i, v in pairs(game.Workspace.GlobalLeaderboard.GUI.SurfaceGui.Holder:GetChildren()) do
				if v.Player.Text == Name then
					isOnLeaderboard = true
					break
				end
			end
			
			print("huh, interesting")
			if isOnLeaderboard == false then
				print("Whoop")
				local newLbFrame = game.ReplicatedStorage:WaitForChild("LeaderboardFrame"):Clone()
				newLbFrame.Player.Text = Name
				newLbFrame.Missions.Text = game.Players:WaitForChild(Name).leaderstats.Missions.Value
				newLbFrame.Rank.Text = "#"..Rank
				newLbFrame.Position = UDim2.new(0,0, newLbFrame.Position.Y.Scale + (0.2 * #game.Workspace.GlobalLeaderboard.GUI.SurfaceGui.Holder:GetChildren()))
				newLbFrame.Parent = game.Workspace.GlobalLeaderboard.GUI.SurfaceGui.Holder
				print("so that worked")
			end
		end
	end)
	if not success then
		print(errormessage)
	end
end

while true do
	for _, player in pairs(game.Players:GetPlayers()) do
		MissionsLeaderboard:SetAsync(player.UserId, player.leaderstats.Missions.Value)
	end
	for _, frame in pairs(game.Workspace.GlobalLeaderboard.GUI.SurfaceGui.Holder:GetChildren()) do
		frame:Destroy()
	end
	updateLeaderboard()
	print("Updated Leaderboard!")
	task.wait(10)
end

Thanks for your help!

Help, the issue is why the gui doesn’t appear when there are multiple players.