cant even perform mundane tasks easily
I get this. It makes everything so fucking hard.
For context, I lived alone in isolation only leaving home to buy groceries for the whole of 2021 and the first few months of this year.
Cooking takes time, you don't have energy to wait for food. Food makes dishes, and you don't have energy for dishes. Everything becomes an "I'll do it later" problem that slowly piles up. If I said that keeping my house organized helps me, that's not super useful advice. If I say that walking helps, well, you need to be in a good mood to walk in the first place. Even standing up or just sitting required too much energy and laying down in bed was best. It's rough.
I'll be honest, after being warded against my will (there are no health checks where I live) and my mother seeing the bullshit idea it was after, offered a compromise. My isolation was too extreme, being warded was too extreme. Seeing a psychiatrist was a middle ground we agreed upon. I am now taking Lexapro + Wellbutrin for a few months now. Lots of ups and downs, but overall it helped.
Another thing that is good is to have any socialization to look forward to, whether that be a job, university classes, or a friendship group. Talking to other human beings does wonders to the soul. And then start a routine to try to keep your good habits in check. You will fail at times, but it's okay. It's part of the journey.
Obviously being that I found myself on these forums recently means that my experience isn't the best, but I hope it helps.
Best wishes, and hugs to you