Have you tried starting a new hobby?
One thing that really helped me when I was really down in the dumps feeling trapped and helpless was painting. I discovered “intuitive painting” with Flora Bowly, went to the nearest craftstore, and splurged on high-quality paint and packs of canvases. It was very therapeutic and took my mind off of everything else. I could get lost for several hours in a painting, and I totally forgot about food….mealtime actually became an inconvenience because it meant I had to stop painting 😄