We can agree that Buddha was very wise and practical. Buddhism is a good option for theists and non-theists. I have little interest in arguing the types of "how many angels on the tip of a pinhead?" questions that have plagued religion.
In many respects Buddhism was an antidote to that kind of thinking. Read the various Hindu posts about dvaita vs advaita, what is Brahman, etc, and you’ll see what I mean.
Buddhism is not predicated on any theological or cosmological proposition, and requires no belief. In fact Buddha specifically refuted the value of pretty much all and any such propositions.
In many respects, Buddhism is scientific. The practice begins wth a hypothesis- the Four Noble Truths, and then a repeatable experiment - the Eightfold Path. Buddha made this clear by saying we should not believe anyone, even him, unless both our experience and reason confirm what he said.
He went further, metaphorically referring to wisdom as a cake, saying that hunger could not be satisfied with a picture of a cake. Meaning - our finely wrought speculations and beliefs are merely a reference to something, not the something itself.
Regarding theological and cosmological propositions, he said they were pointless indulgences in the inconceivable, and of no use in finding the peace of nirvana.