@ilgin I have a way that requires a lot fewer steps that you might want to try.
I avoid enabling root through Directory Utility whenever possible. I'm always encountering Macs where some tech did this and forgot to disable it :). I also avoid Finder for copying a users home directory during migration. I just don't trust Finder.
If I'm going computer to computer, I Thunderbolt Target mode the old computer and plug it into the new one. I rename the old hard drive "archive" to make it less confusing. Then I run the following commands (assuming the default shell is bash--after Catalina you'd need to sudo zsh instead)
sudo bash
ditto -V /Volumes/archive/Users/<username>/ /Users/<username>
Then, IF the config for old Mac>newMac is using local accounts, I create a new local acct on the new Mac with the exact same shortname. System Prefs will say "hey there's a home dir with the same name. would you like to use that home directory for this newly created account?" I say yes, please.
If the config is to use directory accounts, I don't do anything but give the Mac back to the user. When they first login, they'll get their home directory without permissions errors because ditto has copied ownership and permission setbits note-for-note.
There are cases where we want to change the config from directory accounts to local accounts or vice-versa--in that case, I have to chown the home directory differently but that's another topic.
NOTE: The V option isn't necessary but it looks cool watching all the files scroll down the screen at an insane rate and if someone walks past your office it makes it look like you're doing something important. :). Sometimes I use lowercase v option. It just shows directories as they are copied.
