The question is meaningless unless you specify which god you’re talking about.
Oludamare, high god of the Yoruba people of Benin?
Vishnu? Shiva? Zeus? Ahura Mazda?
Marduk, who created the heavens and earth and brought light into being by speaking?
Ea, who created humans from clay and saved a wise and holy man from a world destroying flood by telling him to build an ark?
Sin, whose followers would do no work on “shabatu” days?
Yahweh, who seems to be a composite of these three earlier Mesopotamian deities?
I don’t think there’s any reason to believe any of these dudes aren’t fictional.
Now, some vague universal force/algorithm that defies logic and description? Maybe there is one of those. Seems to be stretching the definition of “god,” though.