It’s not an illusion it’s school. But yes our choices create it.
By learning it’s lessons we purge the negatives from us. We have to do we can go Home.
And because we can’t do the purging of negatives on our own, not with the evildoer always in our faces and forcing us out of our free will, we were sent Help. A Tutor to see we graduate. The tutoring is free!! But you have to sign up for his sessions.