I'm also a middle-aged introvert. Outside of work, the only people I really talk to are my sisters, neither of whom live nearby. One thing that's helped me is

I'm also a middle-aged introvert. Outside of work, the only people I really talk to are my sisters, neither of whom live nearby. One thing that's helped me is fostering rescue dogs with a local organization. I only foster for a few days here and there, but it really makes a difference to feel some life around my apartment.