It's not that we're inside an atom or a cell. It's that things that function properly have to follow certain methods in order to exist. It's not that we're inside a big cell. It's that cells and universes have to function in the same kind of way or they won't work. A city's highway functions like a bloodstream because that a successful method of how you transport things from one end of a giant complex to another.

Hear me out: We're apart of a dying organelle. Cells expand once the outer membrane is ruptured upon death. Perhaps the big bang was just the dying of the cell, and we're slowly drifting off into perceptual nothingness.

as above so below

Space is starting to look more and more like organelle inside of a cell

In physical cosmology, fractal cosmology is a set of minority cosmological theories which state that the distribution of matter in the Universe, or the structure of the universe itself, is a fractal across a wide range of scales