I can kinda chime in on this b/c I actually did exactly that 12 years ago.
My choice was France, and it has been very good, but I don't want to recommend a choice -> rather a framework for making a choice.
1. Firstly, you have to forget all of the Anglosphere countries, they're all hell holes worse than the US 😭
2. Then you want countries which have a decent amount of sovereignty - Germany for instance just has to do whatever the US tells them to, they're more of a colony.
3. Skip major powers like Russia and China, because For Some Reason, they have a weird tenancy to have the same kind of weird dystopian shit that the US does.
4. Countries like El Salvador and Argentina are attractive IN THE MOMENT, but you want to think about the Lindy Effect - if the country spend 90 out of it's last hundred years being a desperate shithole, it's most likely that it will go back to that *in your lifetime*.
5. Some countries (e.g. Greece) have really strong culture, you will never fit in at all unless maybe if you marry a local. Other countries have really weak culture and are being overrun and gutted as we speak. You want to be somewhere in the middle where it's hard but not impossible to integrate.
---
The single biggest benefit you will get from crossing a border is you isolate yourself from the toxic and suicidal American culture, and as you are intentionally adopting culture of the country you are in, you can make a point of choosing The Good Parts.
However, since your name is "Miss", I will give fair warning that pretty much no other country coddles Women as much as the US, so there is a certain culture shock that is unavoidable.
Last point: There are three possible family structures: Move w/ American spouse, marry a local, or marry a 3rd country national and live in a country that is not the homeland of either. Each has costs and benefits, but this post is getting too long already...
