My first impression of 'Death of a Salesman'

I could find out that Willy Loman is a really rude, bad, self-centered man because he is always shouting at his wife and two sons, always using really bad words to talk with his wife, and like 'American Dream', he is always saying that he is the best person for salesman even though he had a car accident. He is actually a good person. However, he is acting really bad. I'm quite enjoying this book and this book is an interesting story.