Why is the alignment/arrangement of the sun, earth, and moon, important to tides?

Why is the alignment/arrangement of the sun, Earth, and moon, important to tides?

Alignment of the sun, earth, & moon are important because the moon moves farther each day as it moves round the earth. & the tides caused by the moon, move after about an hour after the tides that are caused by the suns gravity.

i'd say that the moon rock is about 2.2 billion years old.