Common sense doesn't really have much role to play in physics because so much of it would appear entirely nonsensical, until you start realising that it works.
Again, let me stress that I'm not claiming to have solved the problem. But since physics already has effective mechanisms for spontaneous creation, then it's not a radical stretch to say that even the Universe itself could have been spontaneously created. Since physics also tends to rule out the idea of a literal nothingness, then that objection doesn't appear reasonable either.
It comes back to the main point, really: you don't know enough about the subject to be able to dismiss it. There's an obvious solution to that: go and read up into it. And I don't mean by reading popular science books or watching YouTube videos, but grabbing actual textbooks.
Even then, you still wouldn't have the foggiest about how the Universe was created, because no-one does really, but it would be easier to assess the reasoning behind what I'm saying.