Yep! Sounds super familiar. There is something intimidating about TikTok - I think for me it's how gorgeous everyone looks and how at ease they seem with showing the funny sides/vulnerable sides of themselves that seems so foreign to me. There's a huge ADHD community there (called ADHDtok I think) and I'm simultaneously happy there's so much engagement and jealous I'm not part of it.
But, kudos to you to being on Instagram and doing your thing (and cat's) there. I got off 4 years ago after feeling sad and empty while on there, and now I feel even more awkward trying to go back to it.
As for ADHD, for me it manifests the worst in all the goals I want to accomplish but don't. I WANT to start a podcast about ADHD, but I get stuck and at the end of the day would rather watch another episode of Survivor. I WANT to be a good coworker and be a reliable person, but it seems whenever I get a job the last thing I want to do is research what I should be researching (cue waiting the entire day to work on something and hoping hyperfocus will kick in).