You are special pleading, clearly with mistaken assumptions.

Your illogical assumption: that which does not exist can cause the universe.
There are trillions of causes in nature, which is an overwhelming preponderance of evidence and obviously, that which does not exist can't make anything happen. It doesn't exist.

Another special pleading: God needs a cause.
Since the cause for the universe must be uncaused, because the universe can't always have existed, then the cause must be uncaused. It is illogical to ask what caused the uncaused. It's uncaused! That's like asking what made this circle square?