As the question mentions, is there a relationship between the Big Bang and Black Holes? It appears the Big Bang is a ‘tacked on’ theory that doesn’t align with current theories (since we don’t know or observe dark energy, a mysterious force that explains why matter is accelerating outward). Is it possible that once we understand what happens inside black holes that it could explain our origin? If you can imagine what it’s like to someone inside a black hole event horizon, would they observe matter accelerating outward in a similar manner to our universe? Maybe it’s possible to view the singularity inside the event horizon as the exterior (by flipping the black hole inside out in a mathematical sense) - so to an observer inside the event horizon everything is accelerating outward).
I come from a non-physics background, pls excuse my ignorance or seek further clarification on question.
Links to simple, intuitive further reading appreciated.