It's been a while since I've visited, but I seem to remember
scribophile being a decent community. Link:
http://www.scribophile.com/
It has really tangible ways of encouraging you to give and receive critiques, and the community was always very good at engaging in legitimate evaluation and not just constant back-patting. Active, good functionality, good userbase, nice conversations, and fair critique... pretty cool all around.
Of course, the last time I was an active member there was circa... 2012, I think? Maybe it's changed, maybe it hasn't.