Mini fridge Its too cold freezing everything, temperature dial adjustments does not make any difference

lower numbers usually are less cold

You just need to keep adjusting until you find what works on the dial for you. The liquids should be cold to the touch, and it should NOT freeze any of the produce or eggs...if it's too cold, turn the refrigeration down, ...if the milk is spoiling too soon and the cheese is going bad, turn it a little colder. It takes a while to learn what works, but once you find out, just leave it alone.

probably will freeze as fridge settings get colder with the lower numbers
1 is close to freezing and 4 is probably where a fridge setting should be

set at minor temperature,set the thermostat dial at warm temperature.maybe its a little bit empty of food and at full coldest settings

Open up the compressor area and trace the wiring. The thermostat should be indicated on the wiring diagram, which should be pasted on the cabinet.
It just may not be obvious without a conventional knob, but it will have a thermal sensor tube- usually copper. It might be bonded on a sheetmetal panel inside the fridge. at least one wire to the compressor's mag starter will be attached to that thermostat to interupt power. It would be adjustable with a small flat bladed screwdriver. Clockwise should lower the temperature, and counter clockwise should raise it. To further complicate it that adjustment screw may be under a dab of red paint that used to anchor it.

Put a thermometer in the fridge to monitor the temp. While water will freeze at temps below zero, Sodas will not normally develop ice until below 30 degrees F and and beer will be fine to about 15 degrees F before it freezes.

Try adjusting it lower

Check the fridge sensor. On my Hoover HNMF2805AL80 f/f, first I replaced control module - still freezing.
Have just replaced cheap fridge temperature sensor. Part No. 97061619. Trouble is you have to cut into insulation at back of fridge to replace. I just plugged in sensor & placed inside fridge at back at the bottom - so far so good, only lettuce freezing now, everything else v. cold but not frozen. :)

That can be very difficult to do with a mini refrigerator. There is just not enough separation between the freezer and the refrigerator.

You will likely just have to find a compromise setting and accept the results.

Start lowering down temperature, you may need to defrost fridge overnight.

usually there is an adjustment at the back for the difference between the fridge and freezer compartment. Often is just a vane that blocks freezer air, too much air would freeze the food. Normally you set the fridge thermostat for a normal food temp, then adjust the air to keep the food warmer than the freezer.