Not only the freezer, but also the back wall of the refrigerator compartment suffers from ice buildup. To remove it, use vegetable oil and a cotton ball.

Wet it with oil and wipe the refrigerator wall. This will create a thin, greasy film that will prevent water from sticking to the wall.
It will simply flow down into the hole. The main thing is to keep this hole clear. Clean it regularly.
Another option is hot water and salt. Pour boiling water into a convenient container and place it in the freezer.
Dissolve 2 tablespoons of salt in a glass of water. Pour the solution into a spray bottle and spray the inside of the freezer. The ice will melt faster and be easier to remove.

To whiten plastic, use baking soda and hydrogen peroxide. This solution will remove dirt and whiten plastic parts.
Be sure to disinfect the freezer. Chlorhexidine can be used for this purpose.
If you dry the surface of the freezer walls and wipe them with a cloth soaked in glycerin, the ice will no longer freeze.