I use one-way Syncthing, so my phone automatically backups my pictures to Google Photos (using the Google Photos app) and my computer (using Syncthing). Then I copy them into a folder locally like they existed previously on Google Drive by year.

Then I run rclone sync:

  rclone sync --dry-run gphotos:media/by-year /local/storage/path

Then if I delete some pictures from Google Photos, the same sync command will delete them from my local backup.