What kind of thing are you most interested in because the writing will come much more naturally if you understand your topic.
Answer:
Isolated: alone and without help
Explanation:
Isolated is the appropriate word for this context.
Happy ending
Gatsby and daisy run away together and get married, Nick follows along and they live happily ever after.
Gatsby dies, Nick becomes a famous writer exposing Tom, Tom is arrested for his murder, daisy leaves her old life and remarries rich.
