A sealed circular table-like container, placed on a horizontal surface, containing 1Kg of water, if it is inverted, what is the action of the water on the bottom surface inside the container?

Pressure increases, pressure decreases

Pressure P=pgh, inverted, from narrow at the top to wide at the bottom, the depth of the water increases, i.e., h becomes larger, so the pressure increases.

The upper narrow and wide container wall on the liquid has a diagonal downward pressure, the liquid pressure on the bottom of the container is greater than the liquid's gravity

that is, F1>G water

Next narrow on the width of the wall of the container diagonally upward to support the liquid, the liquid gravity does not have all of the pressure on the bottom of the container, the liquid pressure is less than the liquid's gravity

that is, F2<G water

So: F1>F2 that is, the pressure decreases