Does being eternal or supernatural make gods existence more probable?

whether you call god spirit or material, natural or supernatural, he would still be 'something' existing rather than a void. what makes something improbable is its level of complexity existing without cause. if god is eternal, he is irreducible complexity existing uncaused, by chance. god would be more complicated than anything he is capable of designing, making god more improbable than anything he is supposed to explain. being eternal or supernatural wouldnt make god any less complex, therefore any less improbable. If you disagree, please explain exactly why you disagree.