So, as someone who makes some pretty niche stuff, the best thing that's worked for me is patience and experimentation on where I post and when/what tags I use. I do make money off my art full time so I'm not trying to blow smoke here, I promise.
Not every platform is your platform. Every platform has different things it's into, and every platform has an advantage or disadvantage.
For example: my stuff does well on sites like Tapas, Itchio, Steam and Google Play. This is because I'm good at finishing smaller stories, and these sites are where folks go for smaller stories. BUT, my stuff does poorly on Webtoons (I use printed page format) Twitter and Instagram, because it's just not suited or formatted for those sites, and that's fine.
From what I can tell, it looks like your biggest issue is that uh, I don't think you're actually updating a comic? That's def an issue for Tapas. I looked around your profile and there's a lot of "Coming soon" and updates about things to come, but I'm having a hard time actually finding those things. I think that might actually be your issue here!
Also, you draw a lot of furry art (hell yeah) but I don't see you using places like Furaffinity or Deviantart, which both still have a strong furry and commission community. You may also want to try art or furry Discords if you're not already.
And, hot tip about Twitter, putting hashtags on your posts can actually suppress them in the algorithm. Try putting keywords in your description instead.
Example: "I like this drawing" #sonicfanart try "Here's my sonic fanart!" (This also makes the post more appealing for folks to Retweet, since people are picky about how the tweet looks)
My advice, and I give this advice to a lot of folks, is if you like comics and wanna see yours flourish, try to finish a comic and then release it. Doesn't need to be long, doesn't need to be perfect, just needs to be finished and released. You can release a finished comic on Tapas, Webtoons, Comicfury, Itchio, Gumroad, Google Play Books all for free and get some eyes on your work there and potentially make some money.
EDIT: After looking through some of your comics here on Tapas, a lot of them just seem to be a collection of illustrations and the usual comic format? That could also be why you're having trouble here. Might be time to revise a bit there!
The best way to get people into niche stuff is to simply make a world for them to fall into. Without a comic, without a hook or entry point, it's very difficult to get folks to stay. I'm speaking from experience. And again, this stuff is just gonna take time. I've been posting my comics since 2008, and it's taken me this long to be where I'm at-- it happens. Just try to enjoy it on the way, it'll make things a lot easier, again, I'm speaking from experience. Things improved a lot for me when I let go a little and just had fun with my work, people can feel that, and they will respond.
And, as a last thing, if you don't like my advice and think it stinks, you can instead try this very helpful Google Doc about social media posting. Good luck!
