This seems to be similar to some another Thread to which I Posted the following (paraphrase)
A proof requires some axioms assumed to be true.
Any proof that a god or gods exist would be based on axioms/logic likely to be unacceptable to anyone who is not a believer. For example:
Some sentient entity must have created the universe.
The various Aquinas proofs like: The existence of a watch implies the existence of a watchmaker. Similarly our existence implies the existence of a creator.