I know the case of at least two people who have effectively gone to Eastern Europe seeking lower taxes, good quality of life and other lifestyle choices. But, and this the but, they are pretty much digital nomads. The have little baggage, can move freely, can do their work at any location as long as there is an internet connection and electrical power.
Under that, then yes, Bulgaria and the like are fine.
The affordable cost of living has made these Eastern European nations a popular destination for many people in my country. I am also interested in countries that have fewer work hours compared to Western Europe, where you can work all through your life. It is easier for Europeans (Whites) to have a good life in these countries. People of color might find these countries unfriendly because of racism. Western European nations are more receptive to foreigners, and it is usually easy to integrate into the society. Digital nomad visas are becoming popular and I might consider one of them in the future