Where is the center of the universe?

The universe is weirder than we can even imagine. And many times, people say that there is no center in the universe. Or otherwise thinking. If we want to make borders for the term "universe" and think that the universe is the entirety where all known material exists. We can say that the universe has a center. The universe expands to the great emptiness. We can say that there is no clear border even if we limit the universe to visible material. But that means we would notice only 5% of the universe. 

So if we think like this, we should separate material or the bubble that the Big Bang formed, from space, where that bubble is. So we are living in a bubble. That consists of a small part of known matter. We know that there is more dark matter than visible matter in the universe. But we don't know can the dark matter be outside the bubble of visible material. Nobody has ever seen dark matter, and we cannot be sure how much dark matter is outside the bubble that forms all visible matter.

And it's a remnant of the Big Bang. This means we are living in the Big Bang, where the temperature decreases all the time. We think that the Big Bang was some kind of explosion. We forget that this explosion continues all the time, and the shine from that event is seen as a cosmic microwave background. The newest tool in cosmology is the cosmic gravitational background.

But is the point where the Big Bang happened at the center of the universe? The thing is that in the young universe, the Big Bang was in its entirety. All matter that we know formed in the Big Bang. And that means we are still living in the Big Bang. The temperature of that event decreases.

But does the universe have a center? If we think that the universe is the only thing that we know, we know that there is a center in the cosmic bubble where we live. But if we think that there is also space or dimension behind most long-distance objects, We must say that there is no center in the universe.

https://www.astronomy.com/science/ask-astro-where-is-the-center-of-the-universe/