How can a perfect god create an imperfect universe?
Something like the way a loving husband and wife might get together to make that beautiful, bouncing, baby boy. They love that kid, and do the best for him all the while he lives with them. Then he goes to college, gets some weed, becomes a rapist, murders some folks, goes to prison. Mom and Dad didn't do it. Didn't have the slightest part of it in mind for him. The kid made choices, and they weren't in the programming the parents brought the kid up with.
A perfect god could only create perfect humans, that had the freewill to choose only good options in life. Anything less is not perfect.
Humans are not perfect, thus god is not perfect, thus god cannot exist.
That's not free will.
God defined what freewill is, not us. He created it imperfectly.... You know the rest.
See how easy it is too shoot this god theory down in flames. In contrast it takes much more effort to shoot down the non god theory.