It used to be the Concept Art forums. But that went away. I feel like Discord communities have taken the place of art forums. Like, I joined an art Discord server that Chumps posted here quite a bit ago which is fairly active. I can DM you an invite if you want it.
I haven't kept up with art forums. But a quick Google search yielded these two communities, the first of which I found via Reddit:
https://crimsondaggers.com/forum/index.php
https://www.artistforum.com
https://www.artistforum.com
Also, the Deviant Art forum looks like it's fairly active. But it's fine to hate your work. A lot of artists like the process of making art but not the end product.
I am by no means a professional artist having sold some art in a gallery here and there and to private patrons. So take everything I say with a grain of salt. But I would say to make a list of all the things you want to do like say for a few weeks, then try the next thing and see if you like it. It can be beneficial to build up a body of work, show it to people, and see if they like it. But in the end, it comes down to asking yourself how you feel about it. In short, it's okay to experiment.
Your profile shows that you're in London which is a big city. I would recommend going to and/or staffing at conventions (either volunteer or for pay) in London or another European city. Plus take your portfolio book with you to show to other volunteers and get critiqued by artists tabling at the convention when you have a break or a day off to attend. Then you build a report either by buying something and/or following them on social media.
Additionally, It helps if you do research beforehand on the artists who are going to be there so you have an idea. Usually, a lot of artists are willing to help. I understand why it's hard to find an illustration mentor seeing as they're busy people. As a result, it can be a tall order for an artist to take another one under their wing.
But yeah, I would keep your ears tuned to the ground on the local art scene in London whether it's going to art gallery hopping every so often, a local drawing event, etc. Otherwise, good luck!
Thanks for the reply!
To give a little background, I did a degree in illustration later in life (30), landed a job illustrating for a music festival (through contacts I had made socially), was made redundant after two years and tried to go freelance. I got some commissions (all sorts of stuff - private portrait/pet commissions, some editorial work, doing album art for fairly unknown musicians, logos, flyers etc etc) but it was mostly small fry jobs that didn't pay well.
I was doing a lot of the things you mentioned around that time - went to all the conventions, art fairs, gallery openings etc, and I was working in shared creative studio space with other illustrators, designers etc. Exhibited in a couple of group gallery shows.
I sent my portfolio to every illustration agent in the UK and got rejected by all of them. I couldn't get by on the money I was making, had to take a part-time office job to get by, found it harder to find time and motivation to illustrate, fell into a deep deep depression, eventually stopped getting commissions altogether... and that's where I am now.
None of the work I was doing previously was what I wanted to do, it's just what I fell into, my heart wasn't in a lot of the work.
I've always wanted to do either video game concept art, illustrating assets in 2D games, or illustrating action figure packaging, drawing pop culture stuff... anything in those sort of worlds... but I have no work of that type to show.
Every time I try to draw that sort of stuff I just get frustrated because my skill level is so lacking when it comes to anatomy, lighting, colour theory etc... I feel like it would take me years of hard graft, practice and studying fundamentals to get to a level of employability in those fields, and at 42 maybe it's just too late to chase those dreams, especially when I find it so hard to motivate myself to work on it (depression is a bitch).
Alternatively I could go back to the kind of stuff I was doing before, editorial, portraits, that kind of stuff, and try and start getting commissions again.
It wouldn't be ideal but it would certainly be better than my miserable low paid office job. But if I couldn't make a living from it before I'm not sure what would be different if I tried again.
I just don't what to do, I thought that after 12+ years of doing this I would've found my thing by now, but I just feel more lost than ever.
I joined Discord a few years ago but it all felt a bit too alien for me haha, I'm old and like my old skool forums like this one. I'll try the ones you suggested, thanks!