You OK?

Yes indeed, you could see every point as the universe as its centre (or none of them).

So from wherever you look, the universe is expanding away from you (I.e., other things in it move away from you).

Therefore, you can see that the universe doesn’t have a centre. From this and some other a bit more complicated things, one can see that the Big Bang never had a single point but rather expanded everywhere at once when it happend. Although often called expansion from one point that is wrong.

Also technically you would need to give a time dimension as we live in 4D space.

I am German, but I feel foremost European