Artstation is pretty great. Mind you I'm like...already professional, so I don't feel weird about being on there. I think it's very intimidating for newer artist and for younger people (especially since there's quite a bit of NSFW on the front page some times. Photoreal boobies abound) They recently opened up their Artstation Learning to be free until the end of the year--which is really excellent, just a lot of really good lectures and lessons about how to do anatomy, how to draw, how to paint--so there are resources for people who want to learn and aren't professional yet.
But, it is a job website, so I'm there mostly to see their job board in my inbox and see their recourses, and I have barely art on there. When I upload art, I'm not uploading memes, I'm putting up my fanciest stuff (although I kind of forgot about my AS account all of 2020 lol. I gotta dust that thing off, I think I only have 2 arts on there right now)