My heart goes out to you in your struggles bizi, it does sounds like depression if you lack motivation. For me mixed is also with anxiety and restlessness. Which if you're worried about all those things it sounds like you might be having. Maybe for your sedentary worries you could go on more walks? A daily one perhaps? That might help with motivation. Anyway, lots of hugs for you! And my legs get tired from standing at concerts too and I'm young