From your laptop/computer:- Click on the "Google Drive" button.
 - Select all the pictures.
 - Click on the three-dot symbol in the upper right corner.
 - Choose "Download."
 - You'll get all the pictures in good quality.
 
How to download your pictures from your phone:On this page, click on any picture and hold your finger on the screen until the "Download" option appears. You can do the same on Google Drive.