1, which country to go to, each country has different treatment standards, and Australia and the United States have high incomes. In Europe and Japan, Africa has a low labor force.
2, look at the job occupation, technical management posts will naturally be high, technical posts will naturally be high, and those without skills and language will be low.
3, depending on education and language level, some countries have requirements for this, and they can't handle it without education and language or with low income.