Having said all that, the country that keeps popping up as the best for me is the Netherlands. Thing is, I've never been there. So maybe I'd hate it? The first part of the plan would be to visit, not as a tourist, but really living a day in the life as much as possible.
At this point in my life and how close I am to retirement; I'd probably just wait until I retired before emigrating. It makes it a lot easier than needing to get a job.
The Plan: Get a job in tech, working with technologies I have and can show experience in, ie. Go, Vue, Rust
Where to: US.
Plan: change the constitution, and run for the president. (Plan B: get the job that's the second easiest to get after Plan A)