Hello Tony, sorry about your problems. My name is Marco and I will do my best to help you.
It seems that the freezing issue with Windows 11 RDP sessions is a known problem that has been acknowledged by Microsoft.
The issue is related to the Windows 11 2022 Update, also known as Windows 11 22H2, which causes the Remote Desktop application to stop responding when connecting via a Remote Desktop gateway or Remote Desktop Connection Broker.
Check your Windows updates and also check optional updates.
In the meantime, users can also try some workarounds such as using the Task Manager to end the RDP process, checking for firewall and connectivity issues, and ensuring that DNS settings are correctly configured.
It's important to keep an eye on official Microsoft announcements and updates to stay informed about the progress of the fix for this issue.
You can try this solution: https://learn.microsoft.com/en-us/answers/quest...
Or, I can also suggest you to use software like Anydesk or teamviewer in the meantime.