Not sure whether you sorted this but for other Mac users: Check your privacy tab in System Settings. This may be a Ventura-update issue, but I found that FM was being identified as having an unrecognised developer and thus the OS was blocking it. Approving this fixed this issue of it being 'damaged'.
"FM is damaged and can't be opened" error message on mac
in Football Manager General Discussion
Posted
Not sure whether you sorted this but for other Mac users: Check your privacy tab in System Settings. This may be a Ventura-update issue, but I found that FM was being identified as having an unrecognised developer and thus the OS was blocking it. Approving this fixed this issue of it being 'damaged'.