About 5 years ago, I used critquecircle.com and enjoyed myself very much. It’s a bit difficult to get started, because whatever level of writing you may believe yourself to be at, you have to start in their newcomer’s group.
A writer cannot simply join and start posting written work. You earn points by critiquing other writers’ work, and those points pay for you to post your own writing. Forgive me. I don’t remember how many critiques you had to write before you were eligible to post something of your own.
There are sections dividing the site by genre, so you can whittle away the areas that may not interest you. Also, some people start what are called forums to which they invite specific people to share and critique. Those were very helpful and generally of a higher caliber.
It also doesn’t work to post an entire novel at once. I don’t remember what it was, but there was a word count limit. You can post things one chapter at a time and link them together so that readers know they’re in order.
I wish I could write more about the site, but it’s the middle of the night here. I dozing off as I type.