These big people are actually me

I traveled through time, into a backward world without magic, fighting spirit, or even electricity.Still the standard Orphan start.
Fortunately, time travel has given me a consoling benefit, that is, I can experience all kinds of fantasy life in my dreams.
In the dream, I was one of the ancient gods, leading a noble rebellion against the original.
In the dream, I was once the most authoritative grand duke of the ancient empire, who single-handedly created this great empire.
In the dream, I was the most powerful hero in the age of mythology, and all evils were afraid of me.
In the dream, I was the leader of the elves, the oldest king who guarded the Two Trees.
In the dream, I used to be the goddess of the girl, but I played a big joke on her.
.....
Every era can find my traces and legends, but no one knows that these famous people are all one person!
Then you suddenly tell me now that it was not a dream, but real? ? ?
And so many goddesses, saintesses, princesses, empresses, etc. that I provoked are still alive? ? ?