Since I installed EndeavourOS two things bother me: no numeric keyboard and no touchpad under lightdm.
So here are two solutions (sorry if it’s already online but I couldn’t find it in the forum).
For the numeric keypad, install numlockx then add this to /etc/lightdm/lightdm.conf in the “[Seat:*]” section
To taping add the option in /usr/share/x11/xorg.conf.d/40.libinput.conf, in the touchpad section:
Option “Tapping” “on”
You can also most certainly create a custom file with only this section under /etc/x11/xorg.conf.d