You are correct that fluid pressure depends on depth, but you may have misunderstood Pascal's law or there might be some confusion in the way it was stated to you.
Pascal's law, named after the French mathematician Blaise Pascal, states that when an external pressure is applied to a fluid in a closed system, the pressure is transmitted equally in all directions. In other words, the change in pressure is distributed uniformly throughout the fluid.
This means that if you apply a certain amount of pressure to a confined fluid at one point, that pressure will be transmitted equally to all other points within the fluid. So, if you were to push down on a piston in a closed hydraulic system, the pressure you apply to one end of the system will be transmitted to the other end, resulting in an equal increase in pressure at all points within the fluid.
However, when you talk about fluid pressure depending on depth, you are referring to a different concept known as hydrostatic pressure or the pressure due to the weight of a fluid column. In a fluid at rest, such as a column of liquid, the pressure at a given depth increases with the weight of the fluid above it. This increase in pressure with depth is known as hydrostatic pressure and is a result of the gravitational force acting on the fluid.
So, Pascal's law does not contradict the fact that fluid pressure depends on depth. Instead, Pascal's law describes the transmission of externally applied pressure within a fluid, while hydrostatic pressure describes the increase in pressure with depth due to the weight of the fluid itself. These are two separate principles that apply in different contexts.