As for Vietnam. Good luck feeling safe there as a political dissident in a one party state:
https://en.m.wikipedia.org/wiki/Human_rights_in_Vietnam
https://en.m.wikipedia.org/wiki/Human_rights_in_Vietnam
Comments
"Many Vietnamese migrants have cited failing businesses and debts at home for their decision to seek work in the UK."
https://www.bbc.co.uk/news/articles/ce3yzq6px3eo