Please consider self-publishing or putting it on your own blog. Share it on your social media, here on HN, reddit (there are specific subreddits for self-pub, free books, kindle unlimited, etc) and so on. You never know, even a single heartfelt review will be worth the effort. As a reader, I try to help out lesser known authors, here's an example: https://www.reddit.com/r/Fantasy/comments/izhhoa/hardest_of_...