How to transfer files from in an apple ID to a different apple ID through old Mac air to new Macbook
How to transfer files from in an apple ID to a different apple ID through old Mac air to new Macbook
How to transfer files from in an apple ID to a different apple ID through old Mac air to new Macbook
You can use Migration assistant as explained in the support document you posted from to transfer files and data from an old Mac to a new one.
Alternatively, you can use file sharing, or even AirDrop.
Click here ➜ Set up file sharing on Mac - Apple Support
and here ➜ Use AirDrop on your Mac - Apple Support
How to transfer files from in an apple ID to a different apple ID through old Mac air to new Macbook