@EsperanzaDoves - Inkitt is good for LGBTQA+ content, romance, and erotica. Royal Road is good for fantasy. Ao3 is good for fanfic. I hear good things about Kerning, but I'm taking a wait-and-see approach on that one. There are others, but those are the ones I'm familiar with.
I'm on Inkitt. I've also used Publishdrive and Draft2Digital to self-publish _Ancilla_ for ebook and print purchase. Draft2Digital is free and gets you on Smashwords, which is a great way to get exposure.