Avoid repeated opening because it releases retained cold conditions. Plan checks and alternative storage using the available information instead of continually squeezing packages.
What the observation tells you
A hand test cannot establish every food's temperature history. It also adds heat each time the door or lid is opened. If a reliable external monitor is present, use it within its limitations without treating an old reading as current.
A useful next step
Follow official power-cut guidance and note when supply was lost. Arrange suitable storage where needed. When opening is necessary, do it briefly and deliberately rather than leaving the cabinet open while deciding what to do.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.