I think not being alone but feeling lonely is the pits. As is feeling stuck on autopilot when everyday feels the same and blurred together without a sense of purpose.

You've mentioned being more of a homebody. Do you have and hobbies, crafts, projects to direct your energy to? Any long ago dreams that were placed on hold? Sometimes once rediscovered and then by finding online communities that connect you to others with your interests can help reduce the feeling of isolation.