I found a Minecraft anarchy server that is based in Europe with hosting in Finland so the connection should feel nice for EU players.
It runs on version 1.21.11 and the world is eternal so it never resets. That means your stuff can stay and the map history keeps growing.
It also has enhanced gameplay with custom plugins and it is meant to be an anything goes kind of place where players make the chaos.
EU Anarchy No Resets Ever
GG.MINEWIND.NET New Server IPMinecraftOffline Anarchy With Permanent Map
MinecraftOffline is an anarchy server where players can do their thing and the world is meant to last. The map is permanent so builds and damage can stick around for a long time.
It runs on version 1.21.11 and it uses a custom plugin suite. The server is based in Finland so it should feel smoother for players in Europe.
The hardware is listed too so it seems like the owner cares about keeping it stable. If you want a server that sounds serious about uptime and long term chaos this one fits that vibe.GG.MINEWIND.NET New Server IPYTGAA Semi Anarchy SMP No Mercy
I found a semi anarchy SMP that is built for chaos. It is a no rules kind of place where griefing raids and PvP are all part of normal survival.
You can try to build up an empire or just go full destroy mode. Players can outsmart each other or get wiped fast. It runs 24 7 and uses custom plugins.
It supports versions 1.17.1 through 1.21.1. You need to be whitelisted before you can join so you have to send your Minecraft username in their Discord.GG.MINEWIND.NET New Server IP