If it's a spherical handle, you can take it down and then reset it after you clean the protective film.
Try to turn the metal bearer of the sofa or bed to the left at first. If it won't work, you can take a more detailed photo of it.
Why do you want to remove the film? You can keep it. You will get used to it for a period of time. It will be troublesome if you destroy the handle while tearing off the film.
Open the door and twist down the screws of the handle. Then you can take down the handle and tear off the film.
