Setup and use qopen or wireguard Vpn

Hello there!
I would like to know how to use qopen or wireguard Vpn. I have installed through Terminal but then I don’t know how to connect and use. Please help me, I am absolute beginner for linux.
Thanks with regard…

good noone answer … uninstall manjaro

No clue what “qopen” is.
On the desktop (well laptop) i use this for my wireguard connections: