There are a few ways you can stop your Google Photos from automatically backing up.
Method 1:
On your computer, open Google Photos.
Click the menu icon in the top left corner of the window.
Select “Settings.”
Under “Backup and Sync,” uncheck the box next to “Back up photos and videos.”
Click “Save.”
Method 2:
On your Android device, open the Google Photos app.
Tap the menu icon in the top left corner of the screen.
Tap “Settings.”
Under “Backup …