Thor Will Rebuild Asgard and Rule as King
We didn't forget about you, Asgard! The realm of the gods is destroyed when Thor and Loki set off Ragnarok to defeat their big baddie of an older sister, Hela, in Thor: Ragnarok, but they manage to rescue a shipload of Asgardians before it goes down. Of course, they're then attacked by Thanos and his children on his quest for the Space Stone in the first scene of Infinity War and suffer countless casualties.
Though it looks like Thanos decimates the entire spaceship of people, remember that he only kills half of the population wherever he goes, and Thor tells the Guardians that half of his people were killed. We have to assume that the other half got away on escape pods, most likely led by the missing Valkyrie, and are on their way to Earth like previously planned. Once the whole Thanos business is taken care of, and depending on how that happens, of course, Thor will rebuild his realm either on Earth or their restored planet and rule as their King.