Sorry guys, but I think there are no good countries in the EU if you want to pay the least taxes. I know Cyprus was a good one, until they chased and heard in Dutch parlement one of the (libertarian) employees that was at the top of that Cyprus trust and they ruined his life, by stripping all his assets and destroyed his company. There is a youtube video of the entire hearing if you're interested.
The easiest is (or was, I don't know any trusted ones) a trust in a low taxed over income country.
A much harder thing to do (that is, if you don't want to get caught) is to manage an overshores bank account.
The third option is to get a second passport, buy property and operate a company (doesn't have to make much profit) in a country like the first option, but that carries much more work and responsibilities. Unless you married someone in another country that knows the law or you have connections, I wouldn't bother.
Fourth option is to be a permanent traveler / tourist. In most of your life, you'll own nothing, but if you like adventure and exploration, this would be a nice option.
Fifth and probably best option, is to move to South America or SEA and get a passport and declare yours null and void. Things will get much worse in the west anyway, to a point of and collapse of a totalitarian socialist state. Nevertheless, in the end, we probably will have a world government and pay 100% taxes (i.e. communism = no property rights and will only rent for the credits we get from big brother). For the time being here on earth, the fifth solution would be best imho.
That guy saying that Netherlands has 5% tax, that's completely bs. You pay 1.3 - 1.5% on equity above 25k eur a year when you withdraw crypto -> fiat once a year. If you do it more, you will likely be on the radar of the Dutch irs and they will see it as regular income, so you pay a tax of 50% on average up to close of 60%. I've asked a technical accountant and those were his words.
You can also start your own company and write off expenses to have more than the average joe, at the cost of doing more paperwork than something you love to do, harder work and good luck getting profits in a totally socialized country, where people don't want to buy, but get things for free at the expense of others.
Good luck and tell us how you journey will be, I think most of us would love a fellow traveler to succeed