Next and most important part, I had serious trouble get 3D and wifi working with my default installation. I could not find anything but I made it. And the reason why all is now working fine is simple "switch from linux-lts to linux".
So if you want to have a smooth 3D party and a working wifi, switch to latest arch linux kernel "5.19.1".
I am using NetworkManager to work with any kind of network connection.
I found my freedom with the nmtui and it was working fine until today. Today, I needed to connect to an eduroam WiFi. Long story short this is currently not possible that easy with nmtui or nmcli.
Since I try to keep the system footprint small, I have not installed any gui for the NetworkManager.
Thanks to GallaFrancesco, I found a way to connect to my eduroam realm.