Hey, Roland_HUNter!
Sorry to hear that you are having issues with the matchmaking system in For Honor. I would advise you to complete the connectivity troubleshooting guide for this game.
In particular please complete the port forwarding section as we have found this to help other players in similar situations. Directions for configuring network ports are specific to the software and hardware being used and can be found by visiting the manufacturers website.
If you still continue to experience matchmaking issues after completing these steps, please create a support case so we can look into this further with you.