Just a poorly done flashback

 Players = :()
 RunService = :()
 UserInputService = :()
 LocalPlayer = Players.LocalPlayer


 maxHistoryTime =  
 recordInterval =  
 rewindSpeed =  
 positionHistory = {}
 isRecording = 
 isRewinding = 


 screenGui = .()
screenGui.Name = 
screenGui.Parent = LocalPlayer:()
screenGui.ResetOnSpawn = 


 mainFrame = .()
mainFrame.Size = .(, , , )
mainFrame.Position = .(, , , -)
mainFrame.BackgroundColor3 = .(, , )
mainFrame.BorderSizePixel = 
mainFrame.Active = 
mainFrame.Draggable = 
mainFrame.Parent = screenGui


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


 shadow = .()
shadow.Color = .(, , )
shadow.Thickness = 
shadow.Transparency = 
shadow.Parent = mainFrame


 flashbackButton = .()
flashbackButton.Size = .(, -, , )
flashbackButton.Position = .(, , , )
flashbackButton.BackgroundColor3 = .(, , )
flashbackButton.BorderSizePixel = 
flashbackButton.Text = 
flashbackButton.TextColor3 = .(, , )
flashbackButton.TextSize = 
flashbackButton.Font = .Font.GothamBold
flashbackButton.Parent = mainFrame

 buttonCorner = .()
buttonCorner.CornerRadius = .(, )
buttonCorner.Parent = flashbackButton


 buttonGradient = .()
buttonGradient.Color = ColorSequence.{
    ColorSequenceKeypoint.(, .(, , )),
    ColorSequenceKeypoint.(, .(, , ))
}
buttonGradient.Rotation = 
buttonGradient.Parent = flashbackButton


  ()
      isRecording   LocalPlayer.Character   
    
     humanoidRootPart = LocalPlayer.Character:()
      humanoidRootPart   
    
    
    .(positionHistory, {
         = humanoidRootPart.CFrame,
        Time = ()
    })
    
    
     currentTime = ()
     #positionHistory >   (currentTime - positionHistory[].Time) > maxHistoryTime 
        .(positionHistory, )
    



  ()
     isRewinding  #positionHistory ==    
    
      LocalPlayer.Character   LocalPlayer.Character:() 
        
    
    
    isRewinding = 
    isRecording = 
    
    
    flashbackButton.Text = 
    flashbackButton.BackgroundColor3 = .(, , )
    
     humanoidRootPart = LocalPlayer.Character.HumanoidRootPart
     humanoid = LocalPlayer.Character:()
    
    
     humanoid 
        humanoid.WalkSpeed = 
        humanoid.JumpPower = 
        humanoid.AutoRotate = 
        humanoid.PlatformStand =  
    
    
    
     humanoidRootPart 
        humanoidRootPart.Anchored =  
    
    
    
     totalFrames = #positionHistory
     rewindDelay = recordInterval / rewindSpeed
    
    ( .. totalFrames .. )
    
    
     i = totalFrames, , - 
          isRewinding   LocalPlayer.Character   
        
         record = positionHistory[i]
        
        
         humanoidRootPart  humanoidRootPart.Parent 
            humanoidRootPart.CFrame = record.CFrame
        
        
        
        .(rewindDelay)
    
    
    ()
    
    
     humanoidRootPart 
        humanoidRootPart.Anchored =  
    
    
     humanoid 
        humanoid.PlatformStand = 
        humanoid.WalkSpeed =  
        humanoid.JumpPower =  
        humanoid.AutoRotate = 
    
    
    
    positionHistory = {}
    
    
    isRewinding = 
    .() 
    isRecording = 
    flashbackButton.Text = 
    flashbackButton.BackgroundColor3 = .(, , )



.(()
      
        ()
        .(recordInterval)
    
)


flashbackButton.MouseButton1Click:(()
      isRewinding 
        ()
    
)


UserInputService.InputBegan:((input, gameProcessed)
     gameProcessed   
    
     input.KeyCode == .KeyCode.R 
          isRewinding 
            ()
        
    
)


flashbackButton.MouseEnter:(()
      isRewinding 
        flashbackButton.BackgroundColor3 = .(, , )
    
)

flashbackButton.MouseLeave:(()
      isRewinding 
        flashbackButton.BackgroundColor3 = .(, , )
    
)

()
()
( .. maxHistoryTime .. )
()
( .. rewindSpeed .. )