Upload all your photos to Google Photos, ie. photos.google.com instead of using your Google Drive, and get free unlimited Photo Storage.
If you upload in Hi Quality, it’s free vs. original quality.
If you happen to find out that you have some photos in your Google Photos taking up valuable quota space
ie.
https://one.google.com/u/0/storage?hl=en
Go to:
https://photos.google.com/settings and have Google Compress all your existing photos in Google Photos.
