Android File Transfer is a Mac OS X application that lets you connect your 'Droid, to a Mac OS X 10.7 to 10.14 System, with a USB cable.
(Windows systems can 'see' files on your Android device without a special connecting program.)https://www.android.com/filetransfer/Android File Transfer
Browse and transfer files between your Mac computer and your Android device.
Supports macOS 10.7 - 10.14
How to use it
Download the app.
Open AndroidFileTransfer.dmg.
Drag Android File Transfer to Applications.
Use the USB cable that came with your Android device and connect it to your Mac.
Right click Android File Transfer in the Applications folder.
Click on Open in the Dialog Box that pops up. After you do this once: you can Double click the App to Open It - like normal.
Browse the files and folders on your Android device, and copy files.
Connect your Tablet or Phone to a Mac computer
Your computer must be using Mac OS X 10.7 and up.
Download and install Android File Transfer on your computer.
Open Android File Transfer. (The next time that you connect your phone, it opens automatically.)
Unlock your phone.
With a USB cable, connect your phone to your computer.
On your phone, tap the "Charging this device via USB" notification.
Under "Use USB for," select File Transfer.
An Android File Transfer window will open on your computer. Use it to drag files.
When you’re done, unplug the USB cable.
https://www.android.com/filetransfer/
https://support.google.com/android/answer/9064445