If you are able to go on a walk safely, try short walks around your neighborhood. What kind of health issues are you having...you mentioned your body deteriorating. Are you dealing with energy issues? Just out of curiosity (not judging), how do you spend a typical day. What kind of activities do you do?
If you are able, try to do some self help stuff. A simple one is just hold your hands over your heart so your hands are physically touching your chest and just repeat "I love you" a dozen times or so. If you are able to go on walks, I would highly suggest that. Fresh air and just getting out of the house does help *somewhat* even if its only for 5 minutes.
I have empathy for you because I was in a similar position. Low energy, health issues, etc. stuck inside all day in my late 20s. what helped me (and i can't say it will necessarily help you) was colon cleansing. turned out I had mucoid plaque in my gut all my life and it caused me to have really bad health issues/depression. When I cleared it up, my energy level increased significantly.
