I found a server that is trying to be true vanilla survival. It keeps the gameplay simple with no plugins that change how Minecraft works. There are no land claims and nobody is going to hold your hand.
The world is run by the players. You can build whatever you want and make alliances or start wars. You can also just explore and live out in the wild if that is your thing.
There is basically one big rule which is no hacking.
True Vanilla Survival No Claims
GG.MINEWIND.NET New Server IPNo Rules Survival Chaos Since 2021
I found 1fighter2defenders and it is a survival server that tries to stay as vanilla as possible.
There are no gameplay rules at all. No land claims and no protection. Griefing building cheating and pretty much anything goes.
They also say there are no server sided dupes and no world resets so whatever happens stays in the world.
The server started in April 2021 and it has been around for over 4.5 years with thousands of players visiting at least once.
It runs on 1.21 and you can join from 1.17 up to 1.21.11.GG.MINEWIND.NET New Server IP