You can’t “not be conscious” because an “illusion of consciousness” has to be experienced by something so that means you have consciousness, even if that “you” is something you don’t understand. If there was no consciousness than you wouldn’t experience the illusion of consciousness and your own subjective experience would not happen, and we would all just do the superficially same things without anyone experiencing them until the end of time. This is demonstrably not true because you experience the things. We could argue about solipsism (which I also disagree with) but to deny one’s own consciousness is to blatantly deny evidence.

Free will was a nonsensical concept in the first place, a completely meaningless term which would require coming from complete nothingness to possess

This doesn’t mean we don’t make decisions, it just means we aren’t independent Ubermensch separated from history