The universe is everything. By definition, there can be no evidence for anything outside, before, or after it. Any such evidence would be in the universe. There are no valid questions about it, nor valid answers. Any claims about something outside the universe are neither true nor false—they are completely arbitrary. They have the same intellectual status as God.
I addressed what you said, you just blindly re-iterated your point without any engagement with mine at all.
To spell it out even more clearly, what if "the universe" is larger than the observable universe? In that case, it would still be reasonable to ask where did the observable universe come from? For instance, if we are a simulation, you would place the simulator in "the universe", which as a definition is a fine place to put such a simulator. But it means that questions about our observable universe would then be fair game.
You're trying to shut down thought by simply redefining terms, but even by your own definitions, it doesn't work. It's not a sophisticated or well-thought out position, it's just "I give up entirely, and so should everybody else" dressed up in pretty clothes that are trying to look cool. You're welcome to give up in that way, most people do by default after all, but you've got no grounds to insist that others also give up.
