From my research it looks like Portugal, Switzerland, and Germany have decent crypto tax laws.

https://bitvalex.com/article/the-best-european-crypto-tax-guide
https://www.bitrates.com/news/p/bitcoin-betting-and-crypto-taxation-in-the-eu-and-around-the-world
https://decrypt.co/43513/10-countries-that-dont-tax-bitcoin-gains

But if one is a citizen of a country that wants to tax you no matter where (e.g. US), you still have to pay taxes? Anyone has successfully and legitimately moved elsewhere and reduced taxes?