This isn't meant to be a criticism of your post, but as someone who fades in and out of this situation I want to say: "go outside" is not overly helpful advice for people in this situation. I've tried going outside but without a goal to fulfill or any idea of how "normal people" have fun, it's a struggle to make it feel any less empty than being at home. Obviously it's not your job to write a book-length guide on how to live a fulfilling life though, so carry on.