The following is my understanding of an monologue. I wrote a monologue of Linda, who is one of the characters from the play ,“Death of a Salesman.”

Linda: I am a woman who wants what’s best for my family, but struggles, as life is not always easy. My husband, Willy is a man with good heart but has too much stress on his work and his position of a father and a husband. He drives long hours and comes home tired. I try my best to support him. I make delicious food, assures him that everything will be okay, and keep him in his good mood so that never again he tries to kill himself. I also care a lot about my two precious sons. The youngest, Happy has got a stable life, but my oldest son, Biff seems like he is lost in his life. Willy is not satisfied about Biff of how he always moves to one job to an another. Oh, I really do hope everything becomes all right.

This is a monologue because Linda is uninterrupted when saying the long lines and it gives information of her thoughts and her caring personality.
This monologue would fit in the current plot when Linda talks to the dead Uncle Ben, since she can tell him about her life.