The refrigerator is considered a fairly expensive household appliance.
Therefore, you want to repair and replace it as rarely as possible.
Let's figure out what needs to be done for this and how to maintain the most suitable temperature in the refrigerator.

4 rules
Even barely warm food is a real threat to the cooling equipment. Therefore, it is important to cool the dish in cold water or take it out to the balcony before storing it in the refrigerator.
The second piece of advice is to open the refrigerator door as little as possible. If you cook, take out everything you need right away.
In order not to miss problems with your household appliance, inspect the sealing rubber from time to time. It is often the cause of cold air loss, which is why the device does not cope with its tasks.
And the refrigerator should be filled so that air circulates in no more than 20% of the free space. So if there is no food to store, just cool bottled water in it.