" came from " Interesting thought.
Everything was somewhere, then came here.
What an odd idea.
As for "nothing" or in this case, " absolutely nothing "-
I am not a theoretical astrophysics guy, or any other
type of guy ftm, but I know enough to understand
that physics is extremely weird and counterintuitive.
And that nobody thinks " everything from nothing ".
You could read Tegmarks " Mathematical Unjverse"
if you want to see some of the thunking.
You'd at least not ask about something from nothing,
again.
Note plz that " origin of everything " is no more to,do with
evolution than it does piano lessons.