What was before the big bang?

Hi Readers,
did anyone think what was before the big bang?

We all know that at the beginning of the big bang, all matter, space and time were concentrated at an incredibly small point, and when the critical value was exceeded, the explosion that formed our universe

This is what we know, but what was before the big bang? Nobody knows yet, but maybe I have a little hypothesis.

The expanding universe as we know it today is constantly expanding, but it will not be forever. As the expansion of the universe slows down for several trillions of years, it will begin to shrink again. We can see this today, every galaxy has a massive black hole in the center that absorbs the entire galaxy. And what happens for a long time when all black holes absorb their galaxies? Only black holes will remain in the universe, there will be no stars or no planets. And what happens when there are only black holes? For a very long time these black holes will come closer and then collide and swallow. There will be huge giant black holes that will gradually absorb the whole universe. Until all the black holes unite and swallow everything, a new big bang will emerge.

So what is before the big bang? My point is that the universe was not born because of the big bang, but the universe still exists independently of the big bang.

For a better understanding, imagine our whole universe as a CD disc. The entire disk area is our known universe and the center of the disc was a big bang. When all the black holes absorb the whole universe (as I wrote above), our whole universe concentrates only into the center of the disk.

My idea is that the universe is endless and never ends. So our bigbang is just the local effect of the whole universe, which is still repeated locally.

Simply, if the ultra-gigantic black hole picks up enough energy, it collapses and creates a big bang.

When there is a moment before a big bang, time and space is extremely curved, so it may seem that nothing exists.

But if you can escape from this incredible gravity and travel billions of light years from this ultra huge black hole, you will find that the universe still exists! The universe is just a long way from this black hole, because she has swallowed up the wider area of ​​this part of the universe.