Because of the show's massive global popularity, dedicated fan communities on platforms like Reddit, Tumblr, and Discord frequently collaborate on translating episodes. They create and share English subtitle files that can be paired with the official video streams. Step-by-Step: How to Use External English Subtitles
Search for "La Promesa episode 1 English subtitles" and sort by upload date. Subscribe to the channel and turn on notifications to catch episodes before they are removed. la promesa english subtitles