Presets not applying

"I am getting an error message when I try to open an image from LRC into PS "This version of Lightroom may require the Photoshop Camera Raw version 14.4.1 for full compatability"  As far as I can see there is no version 14.4.1 for camera raw."

It's a bug in LR.  See this thread for an easy workaround:

https://community.adobe.com/t5/lightroom-classic-discussions/p-mac-camera-raw-mismatch-being-reported-from-lrc-11-4-1/td-p/13037547

"I am unable to apply my presets.  They show on the image when I roll over them but they will not attach to the image."

Try resetting LR's preferences:
https://www.lightroomqueen.com/articles-page/how-do-i-reset-lightrooms-preferences/

A number of people have reported that this fixes these symptoms. LR sometimes soils its preferences file, and resetting it can fix all sorts of wonky behavior. That article explains how to restore the old preferences if resetting doesn't help.

Oops meant presets...