SIMPLE UI MADE BY ME OPENSOURCE CODE

 RunService = :()
 TweenService = :()
 UserInputService = :()


 screenGui = .()
screenGui.Name = 
screenGui.Parent = .Players.LocalPlayer:()
screenGui.ZIndexBehavior = .ZIndexBehavior.Sibling
screenGui.ResetOnSpawn = 

.()

 mainFrame = .()
mainFrame.Name = 
mainFrame.Size = .(, , , )
mainFrame.BackgroundColor3 = .(, , )
mainFrame.BorderSizePixel = 
mainFrame.ClipsDescendants = 
mainFrame.Parent = screenGui

  ()
      screenGui   mainFrame   
      screenGui.AbsoluteSize   mainFrame.AbsoluteSize   
    
     screenSize = screenGui.AbsoluteSize
     frameSize = mainFrame.AbsoluteSize
    
     screenSize.X >   frameSize.X >  
         centerX = (screenSize.X - frameSize.X) / 
         centerY = (screenSize.Y - frameSize.Y) / 
        
        mainFrame.Position = .(centerX, centerY)
    


.(()
    .()
     mainFrame  mainFrame.Parent 
        ()
    
)

 recenterDebounce = 
screenGui:():(()
      recenterDebounce 
        recenterDebounce = 
        .()
         mainFrame  mainFrame.Parent 
            ()
        
        recenterDebounce = 
    
)

 uiCorner = .()
uiCorner.CornerRadius = .(, )
uiCorner.Parent = mainFrame

 uiStroke = .()
uiStroke.Color = .(, , )
uiStroke.Thickness = 
uiStroke.Parent = mainFrame

 header = .()
header.Name = 
header.Size = .(, , , )
header.Position = .(, , , )
header.BackgroundColor3 = .(, , )
header.BorderSizePixel = 
header.ZIndex = 
header.Parent = mainFrame

 headerCorner = .()
headerCorner.CornerRadius = .(, , , )
headerCorner.Parent = header


 title = .()
title.Name = 
title.Size = .(, -, , )
title.Position = .(, , , )
title.BackgroundTransparency = 
title.Text =   
title.TextColor3 = .(, , )
title.TextSize = 
title.Font = .Font.GothamBold
title.TextXAlignment = .TextXAlignment.Left
title.ZIndex = 
title.Parent = header

 minimizeButton = .()
minimizeButton.Name = 
minimizeButton.Size = .(, , , )
minimizeButton.Position = .(, -, , )
minimizeButton.BackgroundColor3 = .(, , )
minimizeButton.TextColor3 = .(, , )
minimizeButton.Text = 
minimizeButton.TextSize = 
minimizeButton.Font = .Font.GothamBold
minimizeButton.ZIndex = 
minimizeButton.Parent = header

 minimizeCorner = .()
minimizeCorner.CornerRadius = .(, )
minimizeCorner.Parent = minimizeButton

 closeButton = .()
closeButton.Name = 
closeButton.Size = .(, , , )
closeButton.Position = .(, -, , )
closeButton.BackgroundColor3 = .(, , )
closeButton.TextColor3 = .(, , )
closeButton.Text = 
closeButton.TextSize = 
closeButton.Font = .Font.GothamBold
closeButton.ZIndex = 
closeButton.Parent = header

 closeCorner = .()
closeCorner.CornerRadius = .(, )
closeCorner.Parent = closeButton


 scrollFrame = .()
scrollFrame.Name = 
scrollFrame.Size = .(, -, , -)
scrollFrame.Position = .(, , , )
scrollFrame.BackgroundColor3 = .(, , )
scrollFrame.BackgroundTransparency = 
scrollFrame.BorderSizePixel = 
scrollFrame.ScrollBarThickness = 
scrollFrame.ScrollBarImageColor3 = .(, , )
scrollFrame.ScrollingDirection = .ScrollingDirection.Y
scrollFrame.VerticalScrollBarInset = .ScrollBarInset.Always
scrollFrame.AutomaticCanvasSize = .AutomaticSize.Y
scrollFrame.CanvasSize = .(, , , )
scrollFrame.ZIndex = 
scrollFrame.Parent = mainFrame

 contentCorner = .()
contentCorner.CornerRadius = .(, )
contentCorner.Parent = scrollFrame

 contentStroke = .()
contentStroke.Color = .(, , )
contentStroke.Thickness = 
contentStroke.Parent = scrollFrame


 contentContainer = .()
contentContainer.Name = 
contentContainer.Size = .(, , , )
contentContainer.BackgroundTransparency = 
contentContainer.Parent = scrollFrame


contentContainer:():(()
     totalHeight = 
     _, child  (contentContainer:()) 
         child:() 
            totalHeight = totalHeight + child.AbsoluteSize.Y +  
        
    
    scrollFrame.CanvasSize = .(, , , totalHeight)
)




minimizeButton.MouseEnter:(()
     minimizeButton 
        TweenService:(minimizeButton, TweenInfo.(), {
            BackgroundColor3 = .(, , )
        }):()
    
)

minimizeButton.MouseLeave:(()
     minimizeButton 
        TweenService:(minimizeButton, TweenInfo.(), {
            BackgroundColor3 = .(, , )
        }):()
    
)

closeButton.MouseEnter:(()
     closeButton 
        TweenService:(closeButton, TweenInfo.(), {
            BackgroundColor3 = .(, , )
        }):()
    
)

closeButton.MouseLeave:(()
     closeButton 
        TweenService:(closeButton, TweenInfo.(), {
            BackgroundColor3 = .(, , )
        }):()
    
)

 isMinimized = 
minimizeButton.MouseButton1Click:(()
      mainFrame   scrollFrame   
    
    isMinimized =  isMinimized
    
     isMinimized 
        minimizeButton.Text = 
        
          mainFrame:() 
            mainFrame:(, mainFrame.Size)
        
        
        TweenService:(mainFrame, TweenInfo.(, .EasingStyle.Quad, .EasingDirection.Out), {
            Size = .(, , , )
        }):()
        
        .()
         scrollFrame 
            scrollFrame.Visible = 
        
    
        minimizeButton.Text = 
        
         originalSize = mainFrame:()  .(, , , )
        
         scrollFrame 
            scrollFrame.Visible = 
        
        
        TweenService:(mainFrame, TweenInfo.(, .EasingStyle.Quad, .EasingDirection.Out), {
            Size = originalSize
        }):()
    
)

 isClosing = 
closeButton.MouseButton1Click:(()
     isClosing   
    isClosing = 
    
     fadeInfo = TweenInfo.(, .EasingStyle.Quad, .EasingDirection.Out)
    
    TweenService:(mainFrame, fadeInfo, {
        BackgroundTransparency = 
    }):()
    
     descendants = mainFrame:()
     _, child  (descendants) 
         child:()  child:() 
            TweenService:(child, fadeInfo, {
                TextTransparency = 
            }):()
         child:() 
            TweenService:(child, fadeInfo, {
                BackgroundTransparency = 
            }):()
         child:() 
            TweenService:(child, fadeInfo, {
                Transparency = 
            }):()
        
    
    
    .()
     screenGui  screenGui.Parent 
        screenGui:()
    
)

 isDragging = 
 dragStart, frameStart

header.InputBegan:((input)
     input.UserInputType == .UserInputType.MouseButton1  
       input.UserInputType == .UserInputType.Touch 
        
         mousePos = input.Position
         minimizeButton  closeButton 
             minBtnPos = minimizeButton.AbsolutePosition
             closeBtnPos = closeButton.AbsolutePosition
             btnSize = minimizeButton.AbsoluteSize
            
             mousePos.X >= minBtnPos.X  mousePos.X <= closeBtnPos.X + btnSize.X 
                
            
        
        
        isDragging = 
        dragStart = input.Position
        frameStart = mainFrame.Position
        
          ()
            isDragging = 
        
        
         input.UserInputType == .UserInputType.MouseButton1 
            input:():(()
                 input.UserInputState == .UserInputState.End 
                    ()
                
            )
        
            input.Changed:(()
                 input.UserInputState == .UserInputState.End 
                    ()
                
            )
        
    
)

UserInputService.InputChanged:((input)
     isDragging  mainFrame 
         input.UserInputType == .UserInputType.MouseMovement  
           input.UserInputType == .UserInputType.Touch 
            
             delta = input.Position - dragStart
            mainFrame.Position = .(
                frameStart.X.Scale,
                frameStart.X.Offset + delta.X,
                frameStart.Y.Scale,
                frameStart.Y.Offset + delta.Y
            )
        
    
)

screenGui.AncestryChanged:(()
      screenGui.Parent 
         screenGui 
            screenGui:()
        
    
)

 {
    GUI = screenGui,
    MainFrame = mainFrame,
    ScrollFrame = scrollFrame,
    ContentContainer = contentContainer,
    Destroy = ()
         screenGui  screenGui.Parent 
            screenGui:()
        
    
}