Hi ... I would have originally written my entire post, but because I'm new, I can not be allowed to post my post in its original form. Hence an intro and a link to a pdf. Hope someone can use it.
Purpose: Adblock on own network. Adblock and "private" connection when I'm not on my own network.
This "guide" was originally intended as a step-by-step for myself, as a learning process and not a "guide". I want to do it myself. If you do not want to bother with it, then there are options like PiVPN.
Thanks to those who contribute so that all this can be done for free!
My checklist, own step-by-step for Bullseye-Pi-hole-WireGuard.pdf