Can't win them all is a familiar English idiom for accepting a loss, and in short-form video it has become a handy reaction line rather than a quote tied to one famous scene. Creators trim it to about a second so it can sit at the end of a fail clip without slowing the edit, and its dry, accepting tone suits gaming, sports and everyday mishaps alike. Because the meaning is instantly clear even without context, it keeps circulating as a reusable punchline for videos where the joke is simply that things did not go to plan.