When there's a notification, long tap on the notification and go to that notification's settings. Maybe you can disable fron there.Thanks.
How do I disable the notification from Google Play Services that an OTA Android 13 update will be automatically installed by May 15, 2023?
Edit: Went to settings/apps and selected Google Play Services, unchecked notifications. I'll see if this works.
Edit 2: now I'm getting notifications from system update. I don't see a way to turn that off?