Why tide is not caused by the sun's or moon's gravity?

All matters are governed by gravity. Stronger gravity dominates all matters motions. Matters on earth are governed by earth's gravity only.   

If the sun's gravity can affect matters on earth, then day time the sea level will be higher, the daylight side atmosphere will be higher. Summertime tide will be higher than the Wintertime tide.

From common sense, if the tide is caused by the sun's or moon's gravity, then the highest tide should be under the solar eclipse path.

There should be two high tides move around the earth near the equator every day, one high tide follows the overhead sun and one high tide follows the overhead moon. Near the poles should be all low tides.

High tides should be moving around the earth from east to west not locally up and down.

If high tide is moving around the earth at 1000 miles per hour near the equator, can ships get a free ride? If high tide is not moving around the earth, the present tide theory is not correct.

Sun's attraction force s equal to the earth's centrifugal force, therefore stable orbit.

Sun's and moon's gravity are impossible to cause tide. Scientists should seek out the true mechanism.