@Camelot81 The game is not installed in Origin. It is installed in your ~/Applications folder by default. You cannot just move the Origin app around hoping it will move the game around.
Manually uninstall Origin -
https://bluebellflora.com/how-to-uninstall-origin-on-a-mac/Then download and reinstall Origin, choosing where you want it installed to during the process. If you want to install Origin on an external drive, make sure the external drive has full permission in macOS.
Then download the game. You can choose where you want to install it to in Origin > Preferences > Installs & Saves > Game Library Location.
