Error "Acrobat PRO quit unexpectedly," when trying to open Acrobat on MAC

Uninstall Acrobat and the Creative Cloud Desktop Application using the Cleaner tool:-

https://helpx.adobe.com/creative-cloud/kb/cc-cleaner-tool-installation-problems.html

Delete all Adobe folders located at /Library/Application Support and ~/Library/Application Support.

Delete All Adobe preferences from /Library/Preferences and ~/Library/Preferences.

Restart the machine.

Install Acrobat from the link below:-

https://helpx.adobe.com/download-install/kb/acrobat-downloads.html

Launch Acrobat and Sign in to activate it.