We have not found a country that we could not move to and live there, at least not one that we would consider. I have done a lot of research on the subject that led me to secure an EU country citizenship after my UK passport was not considered EU anymore.
What I found was, even without an EU Citizenship, it was not difficult even if one was not a gazillionaire.
Having and income on $5k - $8k a month from SS, Annuities, Pensions, RMDs etc. pretty much got you residency anywhere one would want to go and be. Some require even less regular income.
Having $1m - $2m - $3m in liquid Net worth would also do the trick.
A lot if us here fit this bill. I have 4 Citizenships and DW has 2, she is applying for an EU citizenship as I type based on being married to me for 35 years, a no brainer.
Getting Healthcare after 65 could be a challenge, but HC is so much cheaper overseas. Many people get basic coverage and keep Medicare in case the sh$t hits the fan.
We have considered, Mexico, Spain, Portugal, France (South), Colombia and others, but DW is a little skeptical, she wants to see what happens in 2024, me I am game for anywhere that has good weather and a relatively stable government, which is a big ask these days.
I should say we have no family ties anywhere other than Canada and it is simply too damn cold there for me.