I think this is Black Mania what you're suffering.

I've had it really bad too. It's soothing if you can find one thing to do that doesn't make you mad or emotional. Like read. It's safe. You can do it in your bed. It will distract your mind if you can focus.
Or write. Do a short story or tell about your own life if you want.

I'm suffering now too. But no real anxiety. Low motivation. Want to stay in. Isolating.