Loki Went Home To Frost Giant Planet At Original End Of Thor: Ragnarok 

screenrant.com -BY COOPER HOOD - Concept art from The Art of Avengers: Endgame reveals Loki went to Jotunheim at the end of Thor: Ragnarok in an alternate draft of the script.
Keywords: loki, jotunheim, went home, frost giant planet, original end, thor: ragnarok