On this topic — how to harden security of the keychain db on the Mac? One is — keep the Mac password long and difficult to crack. What else? Is there any other

On this topic — how to harden security of the keychain db on the Mac? One is — keep the Mac password long and difficult to crack. What else? Is there any other way to make it harder? Like is there a way to ensure that those db files can’t be accessed even with the mac password on any other hardware? Also — on a mac why are these files not saved in a location that requires elevated access? Because that file has everything — password, wifi keys, passkeys; and it is not very practical to have 8-10 word long passphrases for your daily computer. Basically — I am thinking about the scenario when the data of passwords/keychain db might be compromised but not the Mac password itself.