Did you always feel this way? If not, how far can you trace it back? I don’t have any particular expertise in the subject, just curious and willing to listen if you’d like to talk it out.
I'm an extrovert, I can't do without human contact, but at the same time I'm an oddball, which prevents me from building solid connections with most people. This is hell and I can't stop feeling lonely.
Some time ago I was helping my parents with renovation, and I found school documents from my childhood. It said that I had issues getting along with other kids. As an adult I learned what to tell people to get them to like me, but this strategy only gets me to survive in the society, not thrive in it.
It’s really interesting that lack of connection is what you jump to immediately as the cause of your sense of meaninglessness. I wonder what “thriving in society” looks like to you?
And you may have tried this already, but personally I’ve found group hobbies to improve my sense of connectedness. I’m part of a group that meets regularly to sketch on street corners and in coffee shops. I’m not best friends with anyone there, but it’s very fulfilling just to sit with people in the same space for a couple hours, listen to them talk, and share our sketches. There might be drawing, hiking, photography, dance, etc. groups near you…?
You’re certainly not alone in feeling lonely these days though. Modern society is so isolating, connecting feels like such a challenge.
