As a potential tax refugee of EU origin, just do some research by yourself ...
Step1:
Google for a list of countries which do not tax foreign capital gains, or have a tax rate you can live with.
Step2:
Check what the (non)-residency requirements are.
Usually this is the problem. For instance, tax like some Asian countries are quite convenient for foreigners. However, getting a long term visa (e.g. Japan, China, ...) is not easy. But there are ways ... (as higher your net-worth and/or your degree/professional skills, as easier it gets)
Step3:
Visit the so found tax heaven of your choice for a couple of months as a tourist.
Step4:
If you like it, move ... if not, try out the next on the list ...
Step1:
Google for a list of countries which do not tax foreign capital gains, or have a tax rate you can live with.
Step2:
Check what the (non)-residency requirements are.
Usually this is the problem. For instance, tax like some Asian countries are quite convenient for foreigners. However, getting a long term visa (e.g. Japan, China, ...) is not easy. But there are ways ... (as higher your net-worth and/or your degree/professional skills, as easier it gets)
Step3:
Visit the so found tax heaven of your choice for a couple of months as a tourist.
Step4:
If you like it, move ... if not, try out the next on the list ...


And how can you contribute to social security (e-card) without being employed? Do you enjoy living there?