How is pressure determined?

In order to understand this topic, I will give an example. Two friends are walking, One is skiing, the other is walking. On the street there is a loose, high layer of snow. The person who is skiing almost does not fall through, while the other at this time has already fallen into the snow to the knee. The thing is that the pressure exerted by a person on skis is 20 times less than the pressure on the snow of a person without a ski. Hence the pressure depends on the area.
We derive the formula for pressure: Pressure = force / area.