Why doesn’t the sun pull other objects than water?

The Sun's gravity pulls on everything. It's just that rocks and buildings are heavier and less likely to move the way that water does.

The gravitational forces of the moon and sun act on everything on earth. The tides are caused by the moon because water will move more readily than anything else, the moons forces work in a 24 hour cycle which is close to natural period of the oceans.

The sun's gravity pulls the entire earth. That is why it stays in orbit.

Water waves and tides are caused by the sun and moon's tidal forces. They pull on one side of earth more than on the other because one side is closer.

This differential pull affects both rocks and water, but its effect on water is greater since it is liquid. Solid rock holds itself together and resists deformation.

The only accurate part of your question is "it sounds stupid".

it does. I assume you are talking about tides, as waves are caused by wind, not the sun. Tides are caused by the attraction of the sun and the moon. There are tides on dry land as well, except the effect is too small to be felt. It's only because the oceans are so large and fluid that it can be seen.

"shouldn’t we fall forward a little bit" ? no, first of all, the pull is upwards, and second, it is too small to be noticed.

It does. All matter pulls on all other matter. But your mass is so small, the force is negligible.

Waves are made by wind, not the sun's gravitational pull. You're thinking of tides, which result from the tug-of-war between the earth, sun, and moon on the ocean. Because water is a liquid, the effects of the tide are more noticeable.