Fantasy: Am I Not the Protagonist?

After rebirth, I felt that I was the protagonist. In this strange world, I could wear clothes, put out food, and open my mouth. But after several failures, I found that I was not the protagonist? ! After I figured it out, I had to live like the protagonist even if I was playing a supporting role! ! ! ! I don't want to be a supporting role! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.