Birth of universe

If universe started from singularity,
on to how many dimensions did singularity evolve,
or did it evolve first to 1 dimension, then to 2, then to 3 dimensions (in which our existence flows), or to 4 dimensions, and so on..

or it evolved to some finite or infinite dimensions?

when its birthed, does it come from 2 dimensions or 4 dimensions or some adjacent dimensions into this plane of universe of 3 dimensions, and does it flows through to next adjacent dimension, in death.

above all are just thoughts, but thoughts can be real or just imaginary , but ultimately real as thoughts in existence.