Fresh air (and a change of scenery) goes a long way.
I spent a few days in the highlands and it was properly nice just being in a place I haven’t been in a bit.
If you can, I’d encourage you to get away from your local area for a day or two just to see different stuff. Makes an enormous difference.
Staying house bound is probably the worst thing you could do at the moment.
What sort of hobbies did you have pre covid? Are any of them even remotely feasible at the moment?