Hello DaveH1211,
Thank you for reaching out to Apple Support Communities, and we'll be happy to help in any way we can. We understand you're having issues with notifications on your Mac. You can turn off notifications by following the steps here: Turn off notifications for an app or website on Mac - Apple Support
"Turn off notifications for an app or website on Mac
You can turn off notifications for an app or website on your Mac.
Tip: If you just need to silence notifications to stay on task and minimize distractions, use a Focus, such as Do Not Disturb or Work. See Turn a Focus on or off.
- On your Mac, choose Apple menu
> System Settings, then click Notifications
in the sidebar. (You may need to scroll down.) - Click an app or website on the right, then turn off “Allow notifications.”
- You won’t receive notifications for it until you turn on “Allow notifications” again."
We hope this helps.
Cheers!