From the Moto-Z User Guide:
To load music, pictures, videos, documents, or other files to and from your computer, connect your phone to your computer with a USB-C cable.
To transfer files, you need to specify the type of USB computer connection you want to use. Swipe the status bar down and tap USB for charging, then select the connection type:
File transfers (MTP)
Photo transfer (PTP)
MCPAMMY1, being able to download your photos to a computer is very important. There are several available options to so do, as one our community members (Jav6) has pointed out (e.g. using an USB cable). What make/model device are you looking to download your pictures from to a computer? - RobertC_VZW
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Another option is to upload the photos to a cloud account like Google Photos or Microsoft OneDrive and then download them to your computer from that cloud account.