There Is The “Language” Thing
Do you already speak the local language? If yes, then you are way ahead.
Are you willing and able to learn it? Then start before making your move.
Are you hoping to find a place that has enough English speakers to get by? Then Target communities with a large ex-pat population where English is commonly known. Do make a plan to learn the language ASAP.
The Elephant in the Room
Choose A Place Where You Will Be Welcome
I don’t see much about this on affordable retirement abroad articles but I believe it is important to note. Immigration is a huge worldwide topic these days. Even when a country’s policy is welcoming to ex-pat retirees, that doesn’t mean every community within it will be. That is no different from here in the US. Test the waters when visiting your target country and community by mentioning your intentions. See the place through non-tourist eyes.