Your adult DC are not the right people to mitigate your loneliness or take a solicitous interest in the day to day stuff of your life. That’s what your friends and your spouse are for.
I’m also wondering whether you are as reticent in person as you are on here, and whether conversation with you might feel a bit effortful, with a lot of unexpressed aggression and defensiveness.
My dad always felt we didn’t bother with him. But the more effort I put into spending time with him, the more he’d go on about how I was neglecting and abandoning him.
He mainly wanted to chat about his complex medical conditions and doctor’s appointments and medications, and how the world was going to shit, and how everyone around him let him down, and how all his colleagues and neighbours were stupid / incompetent / evil.
He never showed any interest in my life.
Every conversation was an endless dump of martyrdom and misery, topped and tailed with guilt trips.
Eventually I figured if he was going to insist on feeling abandoned no matter how much attention I paid him, I might as well get the benefits of actually abandoning him. So I just stopped communicating with him.
(He still had his wife and second family - he had a huge support network of people by whom he delighted in feeling neglected)
I wonder if there is some form of this dynamic going on.