0 of 0 Servers Shown / openSUSE Leap 15.3

My Problem is that i cannot play anymore. I mostly played on Linux but now i cannot see any Servers!

First i verifyed my Game Data and tryed to reinstall with no change.

Then i tryed some cummon actions like changing user and root permissions to the data of the Game and also on Steam.

Next i opened Ports for Steam and DST to get Full Connection and also deactivated my Firewall completely.

Now im lost but maybe theres just one Person on this Planet to help me out. BtW the Game doesnt say i´m offline but i am