I live on my own too. I have done since I moved out from my parents years ago.
I've basically always been alone, always struggled to make friends, my teenage years were spent either working on things in the garage, wandering through the fields and little bits of woodland around home or else sitting in my room reading books or listening to music. At school I was the fat, ugly stupid one that everyone laughed at. I'm not an only child but my brother and sister are both quite a bit older than me and my brother was not nice to me growing up. He hasn't spoken to me in at least ten years now and I never hear from my sister unless she wants a favour.
I still don't really have any friends. I am just a misfit in this world.
Relationships just don't happen for me. The last time was about four years ago. I'll be 42 in September and I now just accept I will always be alone. I have nothing to offer anyone and I've been alone now so long I'm not sure how I would cope with being in a relationship anyway as I really love the freedom I have to do exactly what I want when I want. I do think I would have liked to have had children though but it's not to be. As this Covid stuff has gone on, I just feel more and more reclusive and strong desire to just be alone in nature. Most of the time I am perfectly happy and I am lucky in so many ways compared to many other people but I have to admit there are times I feel overwhelmed with loneliness.