Hard-wired Ethernet may be no more than a workaround for unplugging a wonky router.
I hooked up the Ethernet Cable and that took care of it. I also got a clean bill of health as far as hardware! I just wish I knew why it's running slow, freezes at times and also the rainbow beach ball shows up a lot.
MacBook Pro - M2, Ventura 13.6 Safari Tech Prev 17.0 Safari 16.6 Firefox 116.0.2 iPhone 7 Version 15.8