When we look out into deep space, what is it we are looking at? That's right, a changing material contingent universe. And that is all we have seen since we were only able to see the sky and the horizon.
Even on this basis (which is wrong), we couldn't possibly say if the universe (the whole thing) was contingent. The description is also wrong because our intuitive notions of space and time (as formalised by Newton) were shown to be fundamentally wrong by Einstein. Every time you use a device with GPS, you are basically providing evidence that it is wrong.
And that has been good enough for every man woman and trans atheist on this forum at least to claim atheism and naturalism as the default position.
Utter drivel. That is nowhere near being the basis for the default position of atheism or naturalism.
And now this business of default positions like so many others is dropped to suit your, well I won't call it an argument.
Also dropped because it doesn't suit. PSR, And now I am supposed to disprove Brute fact.....what happened to showing it's logical. A reversal of burden of proof.......quietly dropped because it no longer suits.
And that is before the bullshit about having done all that's been asked or I'm required, or the absurd rules or the string of courtiers replies.about science and logic.
So in conclusion. The universe in one sense can have a necessary entity in it.
In another sense I.e.the empirical sense on which your default position of atheism is based it is a contingent universe.
Have a supernatural providence of the universe if you wish but be prepared to loose your default position and your immunity from burden of proof.
When you've dug yourself into a deep, dark pit of confusion and misunderstanding, the best advice is always to stop digging.
This isn't difficult.
You have made the claim that there
must be a 'necessary entity' (in the sense of something that is its own reason for existing), so it's clearly your burden of proof because nobody else is claiming, either that there is some other position that they are claiming is right instead, or that you are
definitely wrong.
The other thing that you really need to understand is that, if we do a 'brainstorming' session on some difficult problem and come up with a set of
possible (i.e. not obviously
impossible, no matter how improbably they may seem) solutions, say A, B, C, and D, and if you say that (for example) "the answer is clearly B", then it is part of your job, if you want to use a sound logical deduction, to
prove that A, C, and D are all, in fact,
impossible. This is because the mere existence of these alternatives would undermine your deduction. It is not up to anybody else to show that any of them are right, it is
you that must eliminate them.
As for the PSR, it's not something that is dropped when we don't like it, quantum mechanics pretty much forces us to at least dilute its meaning, if not drop it altogether as anything other than an approximation that is good enough for 'everyday' life, rather than something fundamental. It was only ever a philosophical principle - nobody can prove it, yet you seem to want to make it more fundamental than even your own god.....