It all depends on where you won. If you won online, you do not need to pay taxes.But I would pay even anyway, because if the amount goes to your bank account, the tax office will still ask where you got it from, and all winnings are also taxed. But it also depends on the country, in countries like Moldova or Belarus it is easier and you can avoid paying, although even there it is better not to do this. In Europe, for example, on the contrary, everything is much stricter, especially somewhere in Germany. Also, each country has different taxes, for example, you can discover here taxes in Portugal to understand the approximate situation in Europe. It is also worth not forgetting about cryptocurrency, a fairly reliable means.