Teachability is a sub-virtue of the cardinal virtue of Prudence, and exercising teachability is about learning from others. This can be done daily by reading, watching, and listening to others. This is an excellent replacement for social media and games.
Read books on non-fiction topics like spirituality, history, philosophy, science, business, and finance.
Read classic literature.
Read magazines on art, science, and history.
Watch documentaries.
Watch non-fiction movies/shows.
Watch how-to videos.
Listen more than you talk in conversations by asking open-ended questions (who/what/when/where/why/how) and by saying "tell me more".
Listen to podcasts about science/philosophy, history/deep dives, economics/society, curiosity/trivia, and expert interviews/skill-building.
Listen to non-fiction and classic literature audible books.