Your question poses another question, was there nothing before the big bang?
Depends I guess. What exactly is nothing? Maybe our universe was created from the bang of two universes colliding, or we are the white hole of material ejected from a black hole. It is an odd coincidence that our universe began at a singularity and a black hole ends at a singularity.
The one thing that is a constant in this universe is that everything comes in multiple versions, plants, animals, planets, stars, galaxies... not unrealistic to think of multiple dimensions and universes.
see what i mean? That's not proof at all, you weren't here when it "supposedly happened " and will most likely never truly know what happened. What you just say is the Epitome of taking something at face value. Its what you were taught in school / college, but that doesn't mean it's true. Like how they don't want people to know Black people were in egypt, Blacks were inventors and discoverers of things that cacs try to say "is a new discovery ".

