You could always try tailscale until you figure something else out. Its not really self hosting but its better than having everything accessible to the public internet. Set it up in browser and follow their set up guide then install tailscale app on Truenas and whatever other device you plan on using it with.
Yea no kidding. Gnome is pronounced Guhnome, Mate DE is pronounced Matay, Open Suse is susuh not soos, and Qt is to be pronounced as “cute” instead of just… Q-T. Many such cases.
I remember at one point when I was younger and newer to computers I was typing a document for school and being driven nuts by the damn insert key. Like I had zero clue as to why everything I was typing was just being overwritten every time I needed to go back and change something. I still think the insert key is absolutey evil!
Didn’t see it mentioned here but check out Keep Alive.
https://f-droid.org/packages/io.keepalive.android/