Silejonu

The thing is Snaps are pushed on the desktop, and the server world already uses containers like Docker, so there isn’t much Snap does that’s truly unique and useful.

I see. I may try to do something similar but towards Unbound on my OPNSense router, if that’s possible.

I suspect DoT and DoH still go through, though? I mean you can always block the port 853 for DoT, but DoH is another story.

See my comment for the solution.

Can you run GNOME Videos in the command line and copy/paste the error output when it crashes?

Try this:

sudo dnf update
sudo dnf install https://mirrors.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm https://mirrors.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm
sudo dnf groupupdate core
sudo dnf swap ffmpeg-free ffmpeg --allowerasing
sudo dnf groupupdate multimedia --setop="install_weak_deps=False" --exclude=PackageKit-gstreamer-plugin
sudo dnf groupupdate sound-and-video

You should also add the hardware accelerated codecs, by following the appropriate section depending on your hardware:
https://rpmfusion.org/Howto/Multimedia?highlight=%28%5CbCategoryHowto%5Cb%29

Make sure to reboot.

If this still does not work, install Celluloid and enjoy the superiority of mpv.

Kobo devices are easy to install KOReader on.

You should also ask yourself what kind of books you want to read. Black and white comic books, for instance, can be read on an e-reader, as long as the screen is big enough.