Not sure if it’s relevant, but my Valencia fridge has a screw through each front foot into the floor, and, more importantly, a set of three screws driven through the face frame backing of the upper cabinet over the fridge tying into a black carpet-wrapped 1/2”X 3” plank that sits at an angle to lock in the top of the fridge.
I had to remove the fridge to fix an ice maker water line leak, but it all tightened up nicely, with zero movement.
Sounds like the upper security is either missing or something has come loose in your case?
2019 Isata 3 24FW - sold
2019 Pace Arrow 33D - sold
2022 Renegade Valencia 35MB