csrutil disable
Restart computer
In the terminal, type
sudo open /Applications/TextEdit.app /System/Library/LaunchDaemons/com.apple.ManagedClient.enroll.plist
change
<key>com.apple.ManagedClient.enroll</key>
<true/>
to
<key>com.apple.ManagedClient.enroll</key>
<false/>
So that the changes take effect
This question was already asked and answered previously. It does the same thing as various earlier posts. If you pay, you are using a service/program from someone who has scripted/automated the process to some degree.
Many of these methods have been posted and repeated here in these threads (and on the checkm8 site) but you’ll have to go back a few years for some of the original instructions or carefully find someone who posted file based bypasses. For most I recommend the fresh install with no internet and block three hosts on the pc or at your router or dns device.
The general current work around to MDM is blocking the connection to 3 hosts. Simple. Other methods can work but have drawbacks. For removal of an already installed MDM solution (and bypass as well, deleting / changing various configuration folders or files on the user data partition and possibly preventing MacOS from being able to write downloaded configurations back to the data partition is a working solution. I don’t think many want to talk about that bypass because Apple could easily fix that in a an update if it becomes widely known they don’t error handle file system failure actions.