I used to get most of my business on Deviantart, since they really started pushing this AI stuff the site has died. It technically has more traffic than ever, but actual artists barely get a fraction of the attention they used to. Most (including myself) have moved onto other platforms, because it has become so hostile to artists.
Yeah, it's pretty much impossible to find any new artists to follow and so much of the site is dedicated to getting people to pay for their shitty AI art that just rips directly from actual artwork on the site.
Depends what you like, Furaffinity is pretty good for that sort of stuff and pixiv is good for anime stuff, a lot of artists use twitter but it's twitter. Other than that, niche discords and forums are the only places I really know about these days, it's much, much smaller than it used to be.