Hey, John36949584n376. We're here to help. I've moved the post from Photoshop to Photoshop Elements.
If you've used the Quick action to Remove Background, you can click the button on the Action to switch to the Expert mode in Photoshop Elements & continue to refine the mask of the selected subject.
You can follow the detailed steps here that cover most of how masks work in general: https://adobe.ly/3R7m9wJ