What a sad truth. I have a refrigerator I bought 8 years ago that's on its last legs. Barely cools, ices up constantly.
I am actively avoiding replacing it purely out of spite.
It's 30+ year old predecessor is still kicking in the basement. I'd probably just move it upstairs if it weren't a horrible shade of yellow-green.
The fans are crappy, the lights are crappy, the drainage and evaporative system is crappy... But I guess, technically, when everything is perfect, it does keep frozen stuff frozen. It won't stop spoilage in the fridge as well as literally any other brand, though, even when set to the lowest temperature.
Samsung is forever on my "do not buy; and mention the personal boycott every time the brand is brought up as an option" list, just like Nestle.
You may try any of different methods of making it white again: https://www.howtocleanstuff.net/how-to-whiten-yellowed-plast...
Looks really neat using Peroxide method: https://www.hardwarezone.com.sg/feature-learn-how-whiten-you...
https://www.automaticwasher.org/TD/AWJPEG/SHP/2013/ovrphil++...
I replaced it with a new frig using an old basic design from GE. $800
I should have known better.