It seems to me that God did create the perfect universe - after Eve, it was “very good.”
Adam was charged as a steward (and high priest) with tending (and guarding) the garden. He did a lousy job. He also didn’t protect his spouse.
To be a perfect steward, and perfect caretaker, and perfect spouse, one must ask God for help because we cannot do anything perfectly without God’s help.
Adam failed to call on God when he needed help (i.e. his spouse was being harassed and tempted). And both Adam and Eve wanted to have perfection / be like God - but without God’s help.
They told God they didn’t need him. God said - have it your way.
God pulled back from continuously maintaining the perfect universe (which is something only he can do). Things left to themselves (barring infrequent miracles) tend toward increased entropy / chaos.
And here we are today. Except that when Jesus came, and people accepted God again, the unraveling universe started to be put back together toward it’s originally intended state.
So that’s my explanation. Obviously, I’m not a theologian.

But it makes for interesting speculation.