Consider a possible model for infinite multiverses?

A possible model for infinity is that there large mega-universe and micro-universes) which are all contained in all of known and unknown existence. Stretching in all directions and of increasing or decreasing size relative to each other

Our universe, might fit in the middle of the multiverses.

Thus, the absolutely smallest indivisible fundamental particle in our universe, might make up countless separate, infinitesimal tinier finite universes, that in turn become the bricks or building blocks of larger universes.

There could be an infinite number of these relatively infinitesimal universes, getting ever and ever smaller, and smaller universes, down into the infinite of the minutest or tiny Which in turn are the fundamental building blocks of ever and ever larger universes.

However, each universe could be a complete universe with its own fundamental constants, except some the same scale as our universe or some completely different in sizes relatively smaller or larger.

Maybe "size of an object", is not the correct term including one as large as the A mouse is huge relative to an ant, but tiny relative to a mountain

Our universe could be just one tiny quantum building block of a much larger universe. Maybe this is infinite and there would never be a final mega or micro universe.Because there would always a next larger or the next level smaller.

Maybe it is just all an illusion with everything in existence is just a single fundamental particle?