For my novel I use Tapas, Quotev, and Fictionpress.
Tapas has so far been working the best for me. Its easy to figure out, has a decent community, and is just overall organized the best.
I've had some success with Quotev as well, but you have to constantly promote the hell out of stuff and the forums can be a challenge to find, so that can get irritating. Overall though, my experience there has been mostly positive. People there are pretty chill, and there's a bunch of people that offer really detailed reviews if you ask them.
And then there's Fictionpress. Fictionpress is.... not that good lol. It's a sister site to Fanfiction.com so you'd think there'd be a lot of traffic there, but that's not really the case. Its kind of a ghost town, and theres no way to really interact with readers or reply to reviews other than DMing them.
Also, just gonna drop my novel here for anyone looking for something to read, since that seems to be what everyone else is doing. Go check it out if you're interested!