If you have a local copy of the show and need a separate subtitle file, you can find English tracks for Season 1 and Season 2 on these major databases: A vast library for both movies and TV shows.
To make subtitles load automatically, ensure the subtitle file has the exact same name as the video file and is in the same folder. My Old Man subtitles English
If you are watching through an official provider, you can usually toggle subtitles directly in the video player: If you have a local copy of the