No external disk available/visible in Bridge of MBP??

Ooops, for got to add the instructions, Sorry

This is not the fault of Adobe or anyone; this is Apple making sure that applications that have not been given permission to access areas of your computer cannot access those areas of your computer.

Go to your System Preferences and select Security and Privacy (found in the top section). Now click on the Privacy setting (last tab). Now click on the lock on the bottom left and provide your Administrator code. Now select the Full Disk Access option and click on the "+" symbol. This will bring up the standard Mac Open window and let you add any application you want or need to have full access. Look for Bridge, and select it; it will now appear in that window, and make sure it's checked. Next, go to the Files and Folders option and do the same thing as above (although there's nothing to check, just add. Close everything down and see if that makes it all work.

Please let me know

[Note: these images are from an older OS, the process is the same.]

Close everything up, and you should be good to go.

The Ventura Way

This sounds like you've not given Bridge permission for Apple's protection. Simply, this is an Apple protection issue, not Adobe's issue. 

Go into the System Preferences and select the Privacy & Security tab on the left. Note that there are two options on the right you'll need to deal with: "Files and Folders," and "Full Disk Access."

First, going into Files and Folders, note that in various years of different releases of Adobe Bridge, different needs are needed. I do not know why this is, but it's always better to check and make sure that just because you did it for one release, you may or may not need it for a subsequent release.

Lastly, go into the Full Disk Access option. If you do not see your application in the list, click on the "+" symbol at the very bottom of the window. This will bring up a standard Finder window. Navigate to your Applications Folder, find Adobe Bridge, and add it to the list (You will need to add your Administrator's password to do this.). Then you can "switch" it to the "ON" position. 

This should solve your problem.

Please let us know if that works or not.