Return to Loki

When Avengers: Endgame(Movie), Loki was always around Thor, as a ghost.The ghost Loki was sorrowful looking his brother in despair, so wanted return to past.He decided to take advantage of avengers time heist, and that succeed!Now Endgame's dead Loki return in Thor(2011), as alive.The story more mentally mature Loki begin to rewrite everything, to avoid tragedy.

Avengers: Infinity War Loki is dead. He became a ghost.