How do I transfer everything from my old computer to my new computer

You'd better use the data migration software. It is designed to simplify the process of transferring data from one computer to another. It automates the movement of files, folders, applications, and settings, ensuring that everything is moved efficiently and with minimal manual intervention.

Typically, these tools provide a user-friendly interface that guides you through the process, allowing you to select what you want to transfer and how you want to do it—whether by direct connection between computers, over a network, or using external storage devices.

In addition to basic file transfer, data migration software often retains application configurations and user settings, meaning that programs will function similarly on the new system as they did on the old one. This is particularly beneficial for users who want a seamless transition without having to reinstall applications or reconfigure settings manually. 

Currently, this is the best way to transfer everything from old computer to new computer.