Although it may not be covering your costs, that is a pretty damn good amount of sales considering how short of a period of time the book has been available.
I have a couple of books self published on Amazon, and combined I have not made anywhere near that number of sales lol
I’ll never understand folks leaving reviews like that. If it’s Not your thing then move on. No need to leave a negative review. The only time I’ve ever left less than a 4 star review is when the book was just terribly written or not as advertised.
Sorry you’re dealing with this. Unfortunately, erotica is a saturated market so it’s tough to break in.