Mom how many times do I need to tell you?! Put a ticket in! /s

Maybe with wireguard and some scripting? But I haven't heard of anything like this.

What you want is called client side encryption. Everything on the server cannot be read. Everything is encrypted until it is actually on the client computer.

Lucky for you there is already a plugin for that.

https://www.dokuwiki.org/plugin:dokucrypt2