I've placed the application Zotero.app in the the folder: /Users/<username>/Zotero, as suggested in https://www.zotero.org/support/zotero_data#where_did_my_items_go.
Yo send me to the link Support where it cleary says: "macOS/Users/<username>/Zotero".Right now my Zotero.app is in .../applications/utilities.
Inside my Zotero folder I see
Finally I was able to return the Zotero.app and the Zotero folder to UTILITIES (from Applications).
There is also a Zotero folder in Library/Application Support/Zotero
In /Users/:username:/Zotero/storage/zotero.sqlite (42.1 MB)
Let me add that when I open Zotero it says:Ubicación actual: /Applications/Utilities