the thesis statement is supposed to be vague, it is a one side at a time structure.
one side at a time structure is also called "alternating."
Google this: Compare contrast essay alternating opposing
You will find some pages with excellent guidance.
Thesis statement is supposed to be "vague?" That is strange.
I like your use of the quote by Wilde.If I keep this thesis statement then I have no real topic sentence for my paragraphs. Do you agree?
Yes. The thesis you wrote is informative, but a thesis is supposed to contribute some original observation. It should be an argument that people will not necessarily agree with.
I think you could follow the expression more closely; not getting what you want is bad, and getting what you want is bad. Maybe you can find an original observation by looking for both of these bad things in the story.
If you make a thesis that is abstract enough to require explanation or controversial (i.e. arguable) enough to require defense, then you will have a need for those topic sentences you mentioned.