Note: This is not a duplicate of “How to stop WiFi "Looking for Networks…",” the OP has a WiFi service running. I have totally disabled WiFi in my network preferences (see screenshot below) and the WiFi toggle is set to off in the menu. There should be no WiFi at all, but it still searches.
I am on an iMac using macOS Monterey (12.7.3).
Well the icon in the menu bar looks like it's searching for a network:
But it shouldn’t be when my network location is configured without a wifi service! it has only started to do this recently (that I’ve noticed).