Nothing and Nonexistence

Let's talk nothing and nonexistence. This is all theoretical but theories provoke the mind and perhaps you yourself after reading this will come up with your own hypothesis.
There is a permanent cycle in nature between life and death, one cannot exist without the other or all meaning would be lost. I claim that this cycle also occurs between something and nothing. There cannot be something without nothing nor the other way around.
The question remains what was before nothing and something?
Personally this is my greatest question and the question I would ask the universe itself if I had the opportunity. There are multiple types of nothing, one could call nothing void, dark matter or dark energy https://en.wikipedia.org/wiki/Dark_energy, but that would still be something. What this means is that in our known universe there is more nothing than something, and against all odds life and death have found a way to exist and to create something we call life.
What would mean the death of the universe?
Perhaps a new beginning. We are not certain what death brings, it could bring nothing, or it could bring nonexistence.
What is your earliest memory?
For me it's a bicycle accident. So we miss our early years of youth in a blur while our minds develop, but we also miss the most important of life itself, the existence in the womb and the state before that, the state of nonexistence. It is said that a soul is born in the womb. I think it's important to understand the state of something and nothing for an individual, it can learn us more about the same state for the universe. So far we know that nothing and something although opposites can coexist, let's take it one step further, I believe that a universe is made out of at least two universes interconnected to one another, this could also be a chain of universes. But I'll be talking about the beginning, my hypothesis is that one universe is made of nothing and the other of something with nothing(more like nothing-something as long as it has some kind of form) entangled in it.
So the question here would be: What was before nothing?
If we talk about a chain of nothing and something it would be easy to talk about a Big Bang https://en.wikipedia.org/wiki/Big_Bang and a Big Crunch https://en.wikipedia.org/wiki/Big_Crunch that made from something nothing and then from nothing something. Here could also be included the existence of white holes https://en.wikipedia.org/wiki/White_hole or the explosion of black holes. After absorbing enough matter a black hole https://en.wikipedia.org/wiki/Black_hole inevitably spews all the information out in an explosion of energy, information here meaning whole galaxies that it has devoured while continuously expanding. When 2 black holes collide they become a binary black whole https://en.wikipedia.org/wiki/Binary_black_hole. This event could repeat itself multiple times until there is only one giant black hole in the entirety of the universe. This then could produce the Big Bang at some point.
But would entering such a black whole(inevitable event) take you into nonexistence or would it be just a wormhole that leads you eventually to another universe?
If the second theory would happen it would ruin the cyclical nature of something and nothing unless we talk about a wormhole to a parallel universe. It's a bit hard to toy around with space and time ripples at least, for now.
But let's get back to the question at hand: What was before nothing?
I gave you 2 scientifically theories, let's also talk about a theological theory, god created something out of nothing. There is not much to say about this theory, but it's interesting if we are to go back to the genesis as we know it, first there was light, this could mean the Big Bang or a white hole. Of course this theory dissatisfies both scientists and theologians alike, but if we are to trust in an all-powerful being this would not be that far out of reach. This would also confirm for me why the speed of light is one of the fastest speeds. Although the speed of observable pair particles is almost instant.
When observing one of the particles the other particle almost instant sets itself in the counter position of the first observed particle out of the pair. Quantum entanglement https://www.youtube.com/watch?v=BhG_QZl8WVY
Another theory which has been gaining traction in the past years is the simulation theory. Just plug that supercomputer or quantum computer to a source of energy and start simulating after
a known pattern of existence(most likely their own). This would result in a replica of reality and the laws that govern it. Of course a brain might be also connected to the simulation(brain in a vat theory) https://en.wikipedia.org/wiki/Brain_in_a_vat, or as many brains as you'd want, these would power up the humans included in the replica and would give consciousness to them. But this is a rather grim theory. However it can be even worse, the evil demon theory https://en.wikipedia.org/wiki/Evil_demon says the reality itself has been distorted for each and every one of us and this is just an illusion performed by the evil demon. Lastly, we also have the dream theory, made popular in modern times by movies like "Inception". Movie recommendation: https://www.youtube.com/watch?v=YoHD9XEInc0 So there are many theories out there for what was before nothing. Personally, I prefer thinking that we are in a reality but the odds of that being the truth make it rather problematic, especially when we already have simulation of our known
universe from its beginning https://en.wikipedia.org/wiki/Bolshoi_Cosmological_Simulation. Of course these simulation do not have the power yet to zoom into galaxies but it’s just a matter of time and technological progress. Now, more importantly with all these theories stacked up one on top of the other, we have to think, which of these theories would prefer the existence of life?
Is the universe indifferent to us humans or was it predetermined for us to exist and try as much as we can to enjoy life?
Furthermore if the universe is indifferent and we were just a side effect of beings toying with the creation of the universe how can we claim that there is any purpose to life. An old thing I wrote, that sometimes gives me hope when thinking about the meaningless of the universe is "die for something you believe in".
Belief is personal and it has no limits, if I see myself as a creator of some sorts and I am satisfied with the responsibility and pride it would offer my life why would I not believe in it?
Here I have only talked about Genesis of creation of the universe, but what if this story we all follow called life is actually a Genesis with the purpose of the destruction of the universe?
Perhaps a very advanced civilization troubles itself at night with how their own lives will end and created an elaborate simulation to observe the causes of a possible extinction of the universe. Furthermore, no matter the sense in which we go, from something to nothing or from nothing to something, I believe that as long as any of these theories are true it will continue repeating itself. Lastly, I would like to end on a high note. If we truly live in a simulation, our goal would be to start the acts of conservation of energy and information. If the simulation will be ever closed, my theory is that we will continue living for perhaps what would be centuries or even more due to the fact that a high speed processor could simulate perhaps millions of years in just seconds for the entity it simulates it for. This gives us the chance to live our lives to their end without having to worry about being shut down. What this could also mean, is that when the time comes for us to be closed, we might have the resources necessary to power up our own universe if we reach a tier 2 civilization https://en.wikipedia.org/wiki/Kardashev_scale by then. This would mean to harness the power of the sun to its full potential.
Would that energy be enough to keep the computer running from the inside to the outside or would we be forever doomed?
I cannot say, but I have the hope that there is a happy ending reserved for all of us.