Minecraft coordinates the same in every world?

I ask myself if I'm in one place and go to the same coordinates in another world, whether that is the same place or how it is generally regulated?

No, that's not because every world is unique, unless you would use the same seed (world generation code)

Each map is generated differently

Minecraft always generates new worlds on the basis of a "seed".

It is usually generated randomly. But you can also enter a seed manually.

So no, it will always look different at the same coordinates in different worlds.

But if you use the same seed twice, you have two identical worlds.