I have a telescope. I've seen the heavens. Is Dark Matter real?
I don't know. It does seem that some astrophysical observations suggest the action of more gravity than can be explained by the masses of the matter visibly present. The most obvious explanation for that is that there is additional mass present that we can't detect that's having a gravitational effect on things.
There are various assumptions built into that, such as the observed motions being governed entirely by gravity, gravity only being the product of mass, that we are correctly estimating the mass of the luminous stuff we see, and so on.
Accepting those assumptions, the question is what accounts for the additional mass. One school of thought favors so-called 'machos' (massive compact halo objects) which would be things like brown dwarfs, rogue planets and other conventional matter that just happens to be invisible to us at the moment. I'm personally inclined to think that interstellar space might be filled with planet-like things that aren't orbiting stars, asteroid and comet-like material etc. Lots of mysterious dark places in the interstellar voids. But I don't know if that would total anywhere near the amount of mass that seems to be missing.
The other school of thought favors so-called 'wimps' (weakly interacting massive particles) which would be a new exotic form of matter that possesses mass but interacts with other matter minimally if at all in non-gravitational ways.
So my layman's opinion at the moment is that we have good (but not excellent) reason to suspect a mass deficit that needs explaining, but we don't yet know what accounts for it.
I'm more skeptical about dark energy. That hypothesis seems to be dependent on the idea that the expansion of the universe is speeding up slightly. And that in turn is dependent on various assumptions. Among them is the belief that all examples of a certain kind of star have the same constant luminosity. They are referred to as
'standard candles'. If they all have the same luminosity, then their observed brightness is interpreted as an indicaton of their distance. That in turn is compared to red shifts and it seems that the red shifts are greater than expected for some of them.
So is the luminosity of our standard candles varying with time, or is it the red shifts (and hence the expansion of the universe)? I don't know.
Interpreting quantum mechanics is a notorious can of worms.
Even irrespective of life - this universe must have been created by God.
I have no trouble agreeing with you that the universe is far more mysterious than most people imagine. It isn't just dark matter, dark energy and quantum physics. Those are the kind of questions that conventional science might someday answer.
I wonder why existence exists at all. I ask why it displays the order that it seems to display. I ask what mathematics and logic are, how we know about them, and why physical reality seems to conform to them.
But I don't see how we get from a bunch of unanswered questions to some deity from mythology. That's a leap that I'm not willing to make.
So I'm quite happy calling myself an agnostic regarding the big metaphysical questions.