I am getting 3 different errors with this script

You can write your topic however you want, but you need to answer these questions:

  1. What do you want to achieve? I want to be able to load more than just 2 people

  2. What is the issue? I have an outfit loader but if 2 (Sometimes 1) load request(s) are made it stops working after second one, I get the following error codes: error code 429 (To many requests), Error code 400 (Bad Request and error code 500 (Internal server error)

  3. What solutions have you tried so far? Ive looked on other dev forum posts but none of them can help me, Ive tried searching up possible ways to fix it but still couldnt find anything.

local httpService = game:GetService("HttpService")
local baseUrl1 = "https://avatar.roproxy.com/v1/users/"
local baseUrl2 = "/outfits?itemsPerPage=50"
local requests = {}

local Players = game:GetService("Players")

local GuiPart = workspace.GuiPart
local Frame = GuiPart.SurfaceGui.Frame
local PlayerNameText = Frame.BottomFrame.PlayerName
local PlayerIconImage = Frame.MiddleFrame.PlayerIcon

local thumbType = Enum.ThumbnailType.HeadShot
local thumbSize = Enum.ThumbnailSize.Size420x420

local QueuePart = workspace.QueuePart
local QueueScroll = QueuePart.SurfaceGui.Frame.ScrollingFrame

local QueueTemplate = script.Template

local CurrentRequested

local checkPlayer = function()
	if #requests >= 1 then
		local userId = (requests[1])
		local data = httpService:JSONDecode(httpService:GetAsync(baseUrl1..userId..baseUrl2))
		if data then
			CurrentRequested = userId
			local name
			pcall(function ()
				name = Players:GetNameFromUserIdAsync(userId)
			end)
			local content, isReady = Players:GetUserThumbnailAsync(userId, thumbType, thumbSize)

			PlayerNameText.Text = name
			PlayerIconImage.Image = content


			game.Workspace.Map.Outfits:ClearAllChildren()
			local outfits = data.data
			for i, v in pairs(outfits) do
				local desc = game.Players:GetHumanoidDescriptionFromOutfitId(v.id)
				local c = game.ServerStorage.BaseAvatar:Clone()
				c.Name = v.name
				c.Parent = workspace.Map.Outfits
				c.HumanoidRootPart.Position = Vector3.new(workspace.StartingPoint.Position.X + (5 * (#workspace.Map.Outfits:GetChildren() - 1)), workspace.StartingPoint.Position.Y + 2.5, workspace.StartingPoint.Position.Z)
				c.Humanoid.NameDisplayDistance = 50
				c.Humanoid:ApplyDescription(desc)
				c.HitBox.Position = c.HumanoidRootPart.Position

			end
			table.remove(requests, table.find(requests, userId))
			QueueScroll:FindFirstChild("1"):Destroy()
			local Items = 0
			for _, Child in ipairs(QueueScroll:GetChildren()) do
				if Child:IsA("Frame") then
					Items += 1
				end
			end

			for i = 1, Items do
				for _, Child in ipairs(QueueScroll:GetChildren()) do
					if Child:IsA("Frame") then
						Child.Name = 1
					end
				end
			end
		end
	end
end


local loop = function()
	while task.wait(60) do
		if #requests >= 1 then
			checkPlayer()
		else
			repeat game:GetService("RunService").Heartbeat:Wait() until #requests >= 1
		end
	end
end

game.ReplicatedStorage.RequestUser.OnServerInvoke = function(plr, targetName)
	local targetUserId = game.Players:GetUserIdFromNameAsync(targetName)
	if targetUserId ~= nil then
		local isOnRequests = false
		for i, v in pairs(requests) do
			if v == targetUserId then
				isOnRequests = true
				break
			end
		end
		if isOnRequests == false then
			if not table.find(requests, targetUserId) then
				table.insert(requests, targetUserId)

				QueueScroll:ClearAllChildren()

				local LayoutClone = script.UIListLayout:Clone()
				LayoutClone.Parent = QueueScroll

				local DidAlready = {}
				for i = 1, #requests do
					print(#requests)
					print(i)
					if not table.find(DidAlready, requests[i]) then
						table.insert(DidAlready, requests[i])
						local PlayerThumbnail = Players:GetUserThumbnailAsync(requests[i], Enum.ThumbnailType.HeadShot, Enum.ThumbnailSize.Size420x420)

						local PlayerInfo = Players:GetNameFromUserIdAsync(requests[i])

						local NewTemplate = QueueTemplate:Clone()
						NewTemplate.Name = i
						NewTemplate.LayoutOrder = i
						NewTemplate.MainFrame.TextLabel.Text = PlayerInfo
						NewTemplate.PlayerIcon.Image = PlayerThumbnail
						NewTemplate.Visible = true
						NewTemplate.Parent = QueueScroll
					end
				end
			end
			if #requests == 1 then
				checkPlayer()
			end
			return "Queued"
		else
			return "Already Listed"
		end
	else
		return "Doesn't Exist"
	end
end



coroutine.wrap(loop)()

All of these errors are related to HTTP service failing to fetch your data. Did you make sure the game has access to API services and the URL is a valid one and is not blocked by Roblox/the website?

How do I check if roblox blocked it and if they did what would I use instewd

Now checking, your URL seems to be completely valid, I would recommend trying to play the actual Roblox game instead of the one on your computer. This may give you different results as HTTP service tends to be a buggy mess sometimes.

Ive tried both and neither fixed it