I have a similar situation going on but between siblings. My siblings are ghosting me for issues about me they had been keeping in, which leaves me with no contacts since our last parent has passed away (we're not that old if that helps with context, I'm 24) and I have no nearby friends (solid friends, my chaotic elderly aunts who will all have moved in with me by the end of the month don't count, and neither do coworkers who either don't get along with anyone or in the case of my boss just doesn't click). There are whole days in the past month where I've gone without uttering a single word because there's nobody to communicate with and get something out of. If I were to cry at the end of such a day, it would be the most noise I ever made in a day, which makes it a common thought. And in my exact situation, nothing else, even things that seem like it would help if anything was different, does. I couldn't imagine there being a universal way of dealing with it, but the closest I have to my own equivalent is withdrawal.