Nature comes first

[Rahn127]

First we acknowledge that the universe exists.

From our observations of galaxies we see that most everything is moving away from us. There is also some expansion going on as well that contributes to this effect. The further away something is, the faster it is moving away from us.

As we turn back the hands of time, we see a universe where there are no galaxies, no stars, no matter, only energy.

You ask where nature comes from.
It comes from the existing energy of the universe.

The energy of the universe exists.
How would you get rid of it ?
Where would it go ?

So I guess you're saying that the energy of the universe always existed without a beginning and it created the universe.

I'm saying the energy of the universe exists. As we go forward in time from the big bang, we have expansion, then the formation of subatomic particles, and later simple atoms. Giant clouds (mostly hydrogen, with some helium and lithium) formed early stars and galaxies.

Our universe is unstable and instability seems to be part of nature.
If the energy of the universe remained stable, we wouldn't have a universe.

So we have energy in an unstable environment. Think of it like a jack in the box. You turn the crank and each time you turn everything seems stable.
And then you repeat the exact same thing you just did (turning the crank) and instead of doing nothing, it goes BOOM !!!

Nature has a way of doing that. Imagine how a star forms. Giant clouds of hydrogen form under gravity and draw closer to one another.
More and more and more hydrogen gather together. And it doesn't remain stable does it. It heats up. It changes. It begins to burst out and engulf itself into an explosion of heat and light, becoming a star.

No person or being or god is required. It's just gravity and hydrogen. And a star is born.

So yes, I would say that the energy of the universe has always been.
If it exists now, then it exists in every moment of time.