Hey there, and welcome to Apple Support Communities TimDanaher,
We can certainly understand your concern and can help provide some insight.
We recommend checking out this link for more information on how to edit a Smart Playlist on your Mac.
"Edit Smart Playlists
You can’t add or remove items directly from a Smart Playlist. To change which items are included in the playlist, you must change its criteria.
- In the Music app on your Mac, select a Smart Playlist in the sidebar.
- Note: If you want to change the order of the items in a Smart Playlist, choose View > Sort By. When you choose View > Sort By > Playlist Order, you can drag items into the order you want.
- Click Edit Rules, then change, add, or remove rules or controls.
- Click OK. "
For additional information, check out this link: Create, edit, and delete Smart Playlists in Music on Mac - Apple Support
These steps will help ensure your device is working with ease and can fix common issues like the ones you’re experiencing.
Kindest regards!