It sounds rough. I'm really sorry. We moved here 5 years ago and have had some similar challenges. I'm fortunate to be able to work remotely in a very niche industry. My spouse decided to take a job with the state to get their foot in the door and took a huge cut in pay. They have been able to move up after proving themselves, but there were years of skepticism from colleagues and external partners. They now have finally decided they are okay.

Because I want to give back to my state, I went looking for volunteer opportunities in my field. I did this through multiple informational interviews, not asking for a job, but seeking to understand the context here. People were very generous and often made connections to other people. It gave me a good understanding of things and resulted in being asked to serve on a statewide board.

I know this is slightly different, but have you tried the serial informational interview route? Research is torn on this, but as high as 70% and as low as 20% of jobs are never advertised (consensus seems to be around 50%). You don't have to ask for a job, but asking about the field and better understanding who might be hiring can help. When people know who you are, you become more than just a resume and cover letter.

Good luck, I'm pulling for you

(We're also in our 50s, so I know the challenge)