systemctl --type=service and systemctl list-unit-files do not show all services

I have wireguard installed on a Manjaro host, and Debian Server host The following commands show **wireguard** in the results on Manjaro, but nothing on the Debian server, yet the **wireguard** is definitely running on the debian server. systemctl --type=service systemctl --type=service --all systemctl list-unit-files Why does debian server not show any footprint of **wireguard**? and possibly other *services* that I am unable to also see? **EDIT :** systemctl list-unit-files **wg-quick.target** shows up in debian server but nothing still for systemctl -at service