Where can I get a copy of MacOS Monterey 12.6.8 that is from Apple? I've downloaded a .pkg copy from a website on the Internet but haven't installed it yet. Is it safe? I'd prefer to download a copy from Apple but I don't know where to find it.
I want to do a clean install onto my iMac HDD by first putting Monterey 12.6.8 onto an APFS (Encrypted) formatted USB SSD drive. Then, after I've wiped my HDD, I want to install the bootable OS from the SSD drive to my iMac (late 2015, 27" desktop) HDD.
The .pkg does not have a lock or any kind of authentication symbol in the upper right hand corner.
Is it safe to install? If not, where can I download a copy of this OS software from Apple?
iMac 27″, macOS 12.6