I started on Wattpad and was satisfied with the experience until the forums went down. It was a very hard site to get readership on since 2018 at least, but thanks to the forums and clubbing culture, making friends was easy.
Wattpad also has a stream of books near professional in its quality and lately seems to show preference to YA contemporary (I.e. high school) genre.
People who got readership there thing, get massive readership to the tune of millions of reads. It’s insane.
If you have a story like that, try it there, but you need to be an Instagram popular to get anyone to read your story.
Second site I tried was Royal Road that is like Wattpad for boys, Gamergate crowd. If you have a man-facing story with izekai, boobs and system or litRpg, that’s a great place to try out.
Their interface is best in business, and they are dead-serious about preventing plagiarism. They also show new releases/updates on a separate list, helping people who do not have social media outreach to find at least someone to read their stories.
Finally, after Wattpad removed forums, I started on Tapas. It is small for novels, but it has a wider range for genres than Royal Road, more interested in fantasy, more male protagonists, particularly BL & the forum.
The downside is that it is harder than on Wattpad to get props for a more complex novel. The short-chapter, easy-writing with simple plots seem to do better, but that’s Internet for you.
On Wattpad you can always hope to win a Watty, while Tapas doesn’t acknowledge writing with an award like that, but runs a Premium program instead emphasizing a potential commercial success.
Tapas algorithm is great for while you keep posting the story, but it doesn’t support completed novels