I found CherryCraft SMP and it is a brand new survival multiplayer server with a no rules style so players can do whatever they want.
There is world PVP all the time and it also has an arena if you want straight fights. It sounds like the kind of place where you build up then defend it or go hunt other players.
CherryCraft SMP NO RULES PVP MAYHEM
GG.MINEWIND.NET New Server IPEU Anarchy 1.21.11 Eternal World
This is a straight up anarchy server running Minecraft 1.21.11 and it is hosted in Finland so it feels really smooth for players in Europe.
The world is eternal and they say they never reset so anything you build or destroy is part of the history forever. There are no extra game modes mentioned just pure survival anarchy with enhanced gameplay from custom plugins.
The hardware is pretty serious with a strong Intel Xeon cpu fast NVMe ssds a lot of ram and a solid network connection so the server is made to handle chaos and big fights.
If you want a place where the world does not restart and players create the story by themselves this server looks like that kind of place.GG.MINEWIND.NET New Server IP