No one yet has come up with solid provable definition of what is a god or a supernatural being.
Its easy to say a single creator did it, the ancients did it quite often, things are always easy to imagine for that matter as well, proving an object or thing is real is something completely different.
Will humans ever understand how this universe came to be , probable not and who cares were here now and we're better off dealing with the reality of the living experience than fighting over unprovable ideologies.