Simple Fly Script With a pretty good ui

local UserInputService = game:GetService("UserInputService")
local RunService = game:GetService("RunService")
local Players = game:GetService("Players")
local TweenService = game:GetService("TweenService")

local player = Players.LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()
local humanoidRootPart = character:WaitForChild("HumanoidRootPart")

local flying = false
local flySpeed = 50 -- Default Speed

local screenGui = Instance.new("ScreenGui", game.CoreGui)
screenGui.ResetOnSpawn = false

local openButton = Instance.new("TextButton", screenGui)
openButton.Size = UDim2.new(0, 100, 0, 40)
openButton.Position = UDim2.new(0, 50, 0, 50)
openButton.Text = "Open Fly GUI"
openButton.BackgroundColor3 = Color3.fromRGB(30, 30, 30)
openButton.TextColor3 = Color3.fromRGB(255, 255, 255)
openButton.Draggable = true
openButton.Active = true
openButton.AutoButtonColor = true

local mainFrame = Instance.new("Frame", screenGui)
mainFrame.Size = UDim2.new(0, 300, 0, 200)
mainFrame.Position = UDim2.new(0.5, -150, 0.5, -100)
mainFrame.BackgroundColor3 = Color3.fromRGB(25, 25, 25)
mainFrame.Visible = false
mainFrame.Draggable = true
mainFrame.Active = true

local title = Instance.new("TextLabel", mainFrame)
title.Size = UDim2.new(1, 0, 0, 30)
title.Text = "Fly GUI"
title.BackgroundColor3 = Color3.fromRGB(50, 50, 50)
title.TextColor3 = Color3.fromRGB(255, 255, 255)

title.Font = Enum.Font.GothamBold