It was not good for man to be alone. God knew perfect, didn't He, that man needed companionship, a friend.
It was in God's great plan for man and woman to proliferate mankind, but, it wasn't necessary that Adam and Eve had Cain and Abel. But, what was necessary, or, 'was not good,' was for man to have a companion. God chose a women.
True, as you said, too, "God is all you need," I think, you said in your voice recording. But, God knew perfect that man needed a perfectly good 'helper' and it was Eve