Okay, I see that this is really going to go nowhere. @T_aquaticus tried multiple times to explain and I did perhaps twice as well. Nobody is questioning the smashing success of the Big Bang Theory to accurately predict what has happened from 0.000000000000001 seconds after the universe began. It does an amazing job bringing us early nucleosynthesis and the cosmic microwave background, etc. What it does not explain is what happened before that time. Inflationary cosmology is part of explaining what happened before that time which is still up in the air. But even that cannot explain what happened before 10^-35 seconds or so. And guess what? None of these unknowns are a problem for the Big Bang Theory which enjoys smashing observation successes.
We don’t know what happened before these different epochs. Science does not accept the universe had an absolute beginning (i.e. the entire bouncing cosmology model would say it doesn’t which a lot of cosmologists espouse), nor does is it a fact that it was created out of nothing. The word created shows your bias here as well.