Brazil is arguably on a trend to become more stable, not less. Argentina is a bit of a tossup, but if Milei pulls off what he's trying to do, it could come out a lot stronger. Or it could all collapse, but I wouldn't say it's right now less stable than it was four years ago. Mexico might have cartel issues but as a whole the country is on a huge economic upswing.
Somewhere like Singapore is a stable option as well. Australia and New Zealand.
China might be authoritarian, and the language is hard, but if someone is willing to conform and defer to the Party they can do well there. And if a person's thesis is "I am leaving the US because it is losing its status as a world power", China is the logical country which will be stepping into that vacuum.
In the past, the languages that "everyone spoke" to do business were first Latin, then French, now English. In the future it will be Spanish and Chinese.