Then what is it that you are not believing?
That the concept 'real god' has any coherent definition hence meaning.
The theist proposition is that God/gods exist.
And I've responded by asking you (a) do you mean a real 'god', a 'god' with objective existence? and (b) if not, who cares? and (c) if so, what's a meaningful definition of this 'real god' such that if we find a candidate we can tell whether it's 'a god' / 'God' or not. And you haven't offered such a definition.
I understand these to be "divine characteristics" because they transcend the mechanisms of physical existence. They are metaphysical, i.e., "divine" phenomena. And through them existence becomes more then physically extant, it becomes valuable.
What does 'transcend the mechanisms of physical existence' mean? The only way to be real is to have objective existence, and if something's not real in that sense, the only other way for it to exist is by being imaginary, no?
"You" and "I" are also imaginary (metaphysical) "beings" that exist only as a cognitive experience within a human mind.
That appears to be an amplified take on the qualia argument. Human mentation has been the subject of an ever-growing amount of research as better and better tools have become available since the 1990s. My sense of self, complete with memory, speech, interior dialog, perception, understanding, &c &c, is the product of the biochemistry of my brain. No modern research gives the slightest encouragement to dualism.
'Love' is also a phenomena that exists only as a cognitive experience within a human mind, and you would not deny that love doesn't "exists", would you?
Love is also much studied. We experience it subjectively, but that experience is created particular biochemicals (especially hormones) interacting with the brain. The body has evolved to produce and release them in response to particular stimuli, They influence our conduct; in this example they primarily get us to mate and breed and, by bonding, to nurture and protect offspring. The net is full of details, both of the research and the conclusions, and I commend them to you.
'Truth' also only exists as a cognitive experience within a human mind, and yet you live by this ideal every day of your life. So why is 'God' less extant to you then these?
'Truth', to me, means conformity with / correspondence to / accurate reflection of, reality. Reality means the world external to the self. It's the same thing as the realm of the physical sciences.
So 'truth' is not a necessary notion in the absence of brain, but it refers to objective qualities, not imaginings.