i know the exact feeling and i almost wanna cry bc this is the first time i've seen someone other than me vent about it. i wish there was a solid answer to it, but everyone is so different. everyone offers advice but none of it seems to ever work, so you're stuck feeling like even more of a failure. hope you can find an escape from the anxiety and be able to draw freely again.
just know that its completely okay to feel like this and you're NOT a failure or a bad artist for needing a break. ppl function at different speeds and sometimes productivity/happiness can be followed by intense burnout.
in my case, the only thing that actually helps me is just taking a break, have some time away from social media, and draw my favorite things without posting it (or just post it later instead of immediately). it kinda resets my brain into making drawing feeling like a good experience again, rather than the task paralysis and PDA having a talon grip on my brain while i compare myself to my moots who just post constantly lol.
saying stuff like "itll pass, you'll be fine, hang in there" usually feels really dismissive of the issue, but i do stand by it. it WILL pass, it's just hard to figure out when and how and it's hard to overcome the feeling of being completely stuck. as much as im preaching, i still deal with it so often that i debate myself on whether or not im even okay enough to be posting online lol