I live abroad. I have no truly close friends. The closest friend has 2 kids so I see him maybe once every 2 months. My family is 7000+ miles away. I talk to them about once every 3-8 months. The biggest issue is the time difference. Those times when I think "I feel like calling" it's always the wrong time so it's usually only when I'm up at 3am and instead of going to sleep I tell myself "Ok, I guess I should stay up another hour to call".
I'm self employed. 80% of my expenses are automated. (should be 100% really)
So, if I died a couple of friends might think I was rude for not answering their messages on slack or fb messenger but it would be quite a while before someone came and checked. Unless there was a smell or something coming from the apartment there really is no one I can think of that would check up on me.
Yes, I want to fix this situation. Stupidly I don't know how. I'm > 50yrs old. When I go out most people are < 40yrs old. Of course we get along but being in different places in your life can make it hard to relate the same way that people in the same place in life relate. I go to meetups and know a few people's names but haven't made any "friends".