Dreams are basically simulations of our lives that we run, sometimes with different physical constants, resulting in different worldly behaviours. Fever dreams (not necessarily during a fever) are when we are sweeping over a range of constants, so behaviour keeps on changing.
I rarely ever feature in my own dreams. Nor do people I know. My brain invents completely fictitious stories and characters, like watching a movie or a stage play.
i did not necessarily me mean our as in the person who is dreaming, our as in mostly humans, it is like a diorama we run, not exactly playing sims in our mind