Fucking mess.

• Open LibreWolf (this will create a mount in /tmp)
• copy io.gitlab.LibreWolf.desktop from inside that mount to ~/.local/share/applications
• update-desktop-database ~/.local/share/applications
• xdg-settings set default-web-browser io.gitlab.LibreWolf.desktop
• xdg-mime query default x-scheme-handler/http
• xdg-mime query default x-scheme-handler/https

Didn't work? Yeah, me either. Try this:

• sudo update-alternatives –install /usr/bin/x-www-browser x-www-browser /home/user/apps/LibreWolf/LibreWolf.x86_64.AppImage 100
• update-alternatives –config x-www-browser

Also didn't work? Yeah, me either. Try this:

fuck.