There's nothing wrong with being alone. I don't think computer is causing eye problems. When I worked I spent about 90% of day staring at pc. I've withdrawn from social settings due to ms symptoms. Keep plucking away and find things that make you happy. I got a little dog to keep me company and vitamin d supplements. I don't like direct sunlight cause I burn very easily and can't take the heat. Good luck. This fatigue is a beast. Try strengthening your core and back to help with your posture.