Infinite sprint its bad and has many bugs

-- Function to create or re-create the GUI
local function createGui()
    local player = game.Players.LocalPlayer
    local playerGui = player:WaitForChild("PlayerGui")

    -- Remove existing GUI if it exists
    local existingGui = playerGui:FindFirstChild("SpeedGui")
    if existingGui then
        existingGui:Destroy()
    end

    -- Create the ScreenGui
    local screenGui = Instance.new("ScreenGui")
    screenGui.Name = "SpeedGui"
    screenGui.Parent = playerGui

    -- Create the Frame (initially hidden)
    local frame = Instance.new("Frame")
    frame.Size = UDim2.new(0, 250, 0, 150)
    frame.Position = UDim2.new(1, -250, 0.5, -75)  -- Positioned off-screen to the right
    frame.BackgroundColor3 = Color3.fromRGB(30, 30, 30)
    frame.BorderSizePixel = 0
    frame.ClipsDescendants = true
    frame.Visible = false
    frame.Parent = screenGui

    -- Add a UICorner for rounded corners
    local uiCorner = Instance.new("UICorner")
    uiCorner.CornerRadius = UDim.new(0, 12)
    uiCorner.Parent = frame

    -- Add a UIStroke for a border effect
    local uiStroke = Instance.new("UIStroke")
    uiStroke.Color = Color3.fromRGB(100, 100, 100)
    uiStroke.Thickness = 2
    uiStroke.Parent = frame

    -- Create the TextButton inside the Frame
    local textButton = Instance.new("TextButton")
    textButton.Size = UDim2.new(0.8, 0, 0.4, 0)