Yup, I have a domain I purchased and on my lan I use PiHole and Caddy. All my apps and services use the format app.mydomain.com. PiHole forwards all requests for *.mydomain.com to Caddy, which handles the LE certificate (via DNS challenge) and forwards the requests to the proper IP:PORT. I started using this for everything, my Proxmox hosts, printer, my APs…
I was reading through the comments here, and I went through OPs post history.
It feels a lot like a neurodivergent person, maybe Autism of some kind. The post / questions appear weird to others, but they feel genuine. I live in a very neurodivergent home, and I kinda get it.