If you’re American, you should keep your nationality. Instead, apply for work visa and later, permanent residency at your host country. Reason being, the American citizenship makes the local government think twice about sending you to the gulag etc plus you could seek refuge at a US Embassy anywhere around the world. If you migrate to Aus or NZ, they don’t particularly care that you have two citizenships, so you can become a citizen there but secretly don’t tell the US gov. Bear in mind, you have to pay US taxes as a citizen even if abroad.

Regarding a country to move to, try Japan and become an “English Teacher”. Japanese schools regularly take in native English speakers not so much as English teachers, but more of a cultural exchange teacher. There’s a very low qualifications requirements but be aware that you will be assigned to some school in bumfuck nowhere rice fields. Go search for vids on youtube about this topic.