Years ago I asked about leveling my camper on this forum, and the advice that I was given that I always pass on is to level your STOVE top. So when you cook eggs and stuff it is not going to one side of the pan.
If your stove is level, everything else should be fine, including level beds (I hate sleeping unlevel).
If your frig has level problems when your stove is level, then your camper has some serious frame / build problems!
I put two of those inexpensive stick on levels on the front corner of the camper when we bought it, I can see them while unhooking and using the tongue jack. I don't think I had a smart phone back then!
