Good afternoon chris0407,
Welcome to the Apple Support Communities!
It sounds like your AirPods Pro are not automatically switching between your iPhone and your Mac. We're happy to look into this with you.
Which iPhone model do you have?
You mentioned the update to iOS 14.5 on your iPhone. Did you update to macOS 11.3 on your computer as well?
Always restart devices after updating software.
On your iPhone, try unpairing your AirPods Pro, changing your settings back to defaults, and restarting your device.
Then pair the AirPods Pro and change the Bluetooth settings to your desired preference:
Switch AirPods between iPhone and other devices - iPhone User Guide
If the issue persists, please reply to this thread and we'll do our best to help you!
Take care.