domains on internal network

So maybe I am missing something obvious, but here goes:

I've got a small server at home, and I have simply.com pointing various domains to it. Works fine, nginx routs the traffic where it needs to go.

But whenever I am at home and connected to wifi I have to use the internal address and port to reach my server, e.g. 192.168.0.192:8096 for my Jellyfin server. If I use the public URL at home, i hit the login page to my router.

This is annoying when I use apps, as I need to switch between the public URL and the internal address as I come and go from my home...

What are my options for doing something about this? I want to use the public URL at home too....