Do not tilt a heavy appliance casually for cleaning. Stability, stored contents, electrical cables and handling requirements all need consideration.
What the observation tells you
A fridge can move unexpectedly when its load shifts, and its door or shelves are not suitable lifting points. Integrated models may be fixed to furniture. A spill underneath does not justify pulling against unseen attachments or asking someone to hold the cabinet at an angle.
A useful next step
Clean only safely accessible areas using the owner instructions. Arrange competent help when movement is required and explain any floor or access constraints. Handle food storage and restart requirements as part of that plan.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.