You might have to share us your exact setup to get help...
Are you using a domain or subdomain? Cloudflare DNS challenge? What is going wrong, i.e. the error code 502? 404? 401? Do you have a Caddyfile to share?
It's not Endeavour's fault (or Arch), if you're new to Linux, and you're running Nvidia, you're probably on X11. You can check this by running nvidia-settings in the terminal. You can see if you're running an X server (I think you're using Xfce, which is the default DE for Endeavour iirc). If that is the case, then you're on X11. In nvidia-settings, you can then configure the monitors, it's a bit fiddly, but I'm running (on X11 with Nvidia) two monitors with a left vertical monitor, at different refresh rates even, and it works.
Also, make sure you have the Nvidia drivers, and not nouveau.
I'm currently running Dokuwiki as a Docker container, which has a built-in editor, good admin web-ui panel, easy ways to add multiple users, and also baked in access control rules so some can edit certain pages. It is also flat-file so no storing plain text in a database, so you can backup and migrate easily.
There are a lot of alternatives, but Dokuwiki is quite mature, and has that familiar Wiki look that your family might appreciate, rather than it looking like boring/corporate software documentation.
I've tried all streaming platforms on and off over the years. I've always returned to DRM-free methods (if you know what I mean). I currently self-host Navidrome. Not the best for discovery though, for that, maybe try InnerTune.
There are ads?? I don't see any on the Linux appimage and my current version. I do have network-wide adblocker though. If there are ads, that's a shame :/
I'm currently running it as a private instance, it is quite stable and fast, faster than my own private instance of Whoogle, although you don't get all the nifty features like instant results and related searches, etc.
Thanks for the suggestion with xremap. I knew some X utils would fix this. GTK (so for some browsers) has an Emacs mode out of the box; I used to use it, but C-w was still being overridden.
Yes, but that's not always the case. For example, I use Portainer to drop into the shell of my Docker containers with a "terminal UI" and that tricks me into using Ctrl + W.
Typical Verge headline..."A terrific notes app [for the Apple ecosystem]". FTFY.
Also, I wouldn't call it simple. A simple notes "app" is a plain text or markdown editor.