This is the recommended method, because it always gets the public release that has been tested, it's easy to remember, and supports all parameters.
Open PowerShell as Administrator and type
Install-Script winget-install -Force
Follow the prompts to complete the installation (you can tap A to accept all prompts or Y to select them individually.
Note: -Force is optional but recommended, as it will force the script to update if it is outdated. If you do not use -Force, it will not overwrite the script if outdated.
winget-install