RV builders are famous for hiding screws behind/underneath false walls/bottoms that are stapled in place. But before I went to that extreme I would look very carefully at that panel on the oven above the door to see it it doesn't snap off in some way exposing mounting screws. Also, if you know your make/model; google it for a manual which may show how it's installed.
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad
2020 Chevy Colorado Z71 Trail Runner Alternate Toad