As far as endings go, Steve Rogers’ definitely struck one of the biggest emotional chords in Avengers: Endgame. After Tony Stark’s funeral, Steve ventured into the Quantum Realm to put the Infinity Stones back in their proper time periods, and from the perspective of Hulk, Falcon and Winter Soldier, he was only supposed to be gone for a few seconds. Instead, he decided to go to the 1940s after his task was complete and stay there, living a “beautiful” life with Peggy Carter.
Article source: https://www.cinemablend.com/news/2471368/the-russo-brothers-confirm-chris-evans-has-retired-from-captain-america-after-endgame