Which best describes an ancient Greek tragedy?

An ancient Greek tragedy includes a character that faces a tragic flaw, and learns a moral/lesson. The character usually has a foil.

An example of a tragedy: Antigone. It was a book that showed the fate of people who had pride. Creon noticed his flaw too late, and then he faced fate, as Haimon killed himself after Antigone's death. I recommend you read this Greek tragedy, very interesting.