ScienceExplanation Man says
it's a badly posed question. "can something come from nothing"
There is no such thing as nothing. If you take a volume of empty space, in the most sparse void, with a handful of atoms in the entire volume, that's not nothing - that is a quantum state that APPEARS to us as nothing, but we are starting to understand that there is in fact a vast amount of energy just "under" empty space.
The constant activity of this weird energy, in what we think of as empty space, creates and destroys matter constantly, most of this matter existing only briefly. But there is a real, solid, physical explanation, meaning that "you can touch" (you can't touch) the physical elements which are making this matter appear. The are real and in theory, tangible. And it's pretty easy to speculate that they are directly influenced by other forces that are outside of our spacetime continuum.
Likewise, the stuff that came out of the big bang didn't come from nothing, it came from a thing which was very much something - the very opposite concept of nothing, i.e. A (figurative) TON of mass. But, it was in a state which does not exist now, and we do not know exactly what proprieties it had. We imagine that it was incredibly compressed and exceptionally hot, but the physical space that it occupied is not located in our spacetime - it only exploded in this spacetime at the big bang.
Think of it as sand inside a box. We live in the box. We think "where the fuck did all this sand come from".
It was in a bucket full of sand, that was not in the box. Then it got poured in the box.
I recommend that everyone watch this channel, from the beginning.
https://www.youtube.com/c/pbsspacetime/videos
They have since a year ago surpassed me so i don't really understand anymore what they are explaining, but everyone should be able to make it about half way through.
They got muuuch better 4 years ago when that ozzy Matt O'Dowd took over.