What MacOS version are you running?
A common issue i believe is that the ~/Library folder gets hidden from both the finder and indexer.
To fix this, do the following:
shift + ⌘ (command) + G which will GO to a folder, then paste in this location:
~/Library/Application Support/Bitcoin
Not sure if you've tried this yet, but you should.
OR, you've installed bitcoin core a long time ago when they weren't using ~/Library/Application Support/Bitcoin as the default location.