I have emigrated 4 times in my life. My first time was when I was 11 months old. You should never move because you can’t stand where you are. However true and justified that may be. And frankly with the UK at the moment it’s probably largely true. You should leave with the attitude that “this will be even better where I am going”. That’s my nickel on the topic as Americans would say. As for jobs. You need to work remotely And that’s not kosher most of the time. You need to seriously think about this.
Typically naive question. What other citizenship will you have? None I assume. They won’t let you give it up and become stateless as they know that only lunatics would do that. Next question?