Here is one of the ereaders that sends me notices of free and almost free books. It is generally generic unless you ask for certain genres, I don't because I like a wide selection but we can change the genre in the upper left corner on my tablet I don't know where your genre change button will be, but you can get all the different genres.

https://www.ereadernewstoday.com/book/2025/07/13/?fbclid=IwY2xjawLhAotleHRuA2FlbQIxMABicmlkETBnODI3MFVCT092d25IWmFPAR7h3oivLPn4AQm0zdeFwMDRc6GTUo2RAfRaegchCDiNr5VIE9ZWaIjlh6ZJaQ_aem_O8OHNqVCebwezXSLzgz3tw