Throughout Loki Season 2, fans have been privy to one of the most mind-bending journeys in the Marvel Cinematic Universe. Tom Hiddleston's titular character is trying to protect the fabric of space and time after Sylvie killed He Who Remains. It's part of his redemption arc, knowing if he doesn't deliver, it could bring about an unstoppable apocalypse.
Source:https://www.cbr.com/loki-season2-miss-minutes-ultron-arc/