Some designs use a shared control arrangement. The dial's effect must be understood from the model instructions rather than assumed to adjust only the nearest compartment.
What the observation tells you
Turning it to solve one storage problem can alter conditions elsewhere. A stronger setting also does not overcome an unsuitable room temperature or blocked air path. The number on a dial is not necessarily a Celsius value for either space.
A useful next step
Check the control diagram and recommended normal position. Describe the measured fridge condition and the frozen-food condition separately before making changes. Do not chase one symptom with repeated extreme adjustments.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.