Convert a UIImage into cgContext

I have a UIImageView that will serve as a drawing canvas and i want to implement a function that will get the content inside of UIImageView and convert it into a cgContect so it could be set as a background for the canvas to draw over but i ran into an issue. I have a reset button that will set the UIImageView.image to nil (to clear the current UIview) for that I tried to save the UIImageView into a canvasArray array to save it into a second view savedImageView

this is my reset function that will delete the content of mainImageView

@objc func resetPressed(_ sender: Any) {
        mainImageView.image = nil
    }

The array that will is store and object that receives mainImageView as a param and the function that saved it

  var canvasArray: [Canvas] = []

  @objc func saveCanvas(_ sender: Any)   {.      
                                                   //here is the UIImageView
        guard let canvas = Canvas(name: "", canvas: mainImageView, numOfPages: 0) else {
            return
        }
    
        canvasArray.append(canvas)
        
        if canvasArray.count > 0 {
            canvasArray.forEach{ canvas in
                print("\(canvas.canvas.image)")
              
            }
        }
    }

And the function that will get the iUIImageView.image and will convert it into cgContext

 @objc func changeImagefunc(_ sender: Any) {
        if canvasArray.count < pages {
            return
        }

   
        if let savedImage = canvasArray[pages].canvas.image {
   
            UIGraphicsBeginImageContext(view.frame.size)

          
            savedImage.draw(in: view.bounds)

       
            if let drawnImage = UIGraphicsGetImageFromCurrentImageContext() {
             
                mainImageView.image = drawnImage
            }

           
            UIGraphicsEndImageContext()
            print("clicked button ")
        }
    }

I have 3 different UIViewImage that will ser a specific purpose mainImageView and tempImageView that will check the start and and of the drawing (function(which works fine) and the savedImageView that will receive the image converted into "cgContext " . Three of them stored in a function that then gets passed into the viewDidLoad section

 func setupImageViews() {
        view.addSubview(tempImageView)
        tempImageView.frame = view.bounds
        
        if savedImageView.image != nil {
            view.addSubview(savedImageView)
            savedImageView.frame = view.bounds
        } else {
            view.addSubview(mainImageView)
            mainImageView.frame = view.bounds
        }
    }

Like I said i can not get this to work because the resetButton/function is deleted not only the current UIImageView (which is what is intended to do ) but also deletes the content inside the canvasArray which I want to avoid. Would there ve a different approach to it or what else do you recommend?