The author of The Martian gave away the book for years before it caught on and made money for him and that book is outstanding.
Writing is a career not a one time book. Even then, it's a hard career to make a living at. Many people use books to express their ideas as a way to improve their true career. Think politicians that are running for office. Or people that want to improve their resume.
You need to continue to promote your book and hope it catches on. Think of it as a hobby until you can turn it into a career.
Also, if you tell me it's written by AI, I automatically think it's not something I want to read. I can get any LLM to write stuff to read. I don't need to buy a book. Use AI to help you but use your own style and words to write something people want to read. People are writing books written by AI by the thousands. You need to standout in that crowded market place. Good luck.