Got my Google account storage down from full to 58% by deleting almost no actual photos, just discovering that I still had Twitter and Instagram post backups in the thousands, three years after deleting my accounts. 🤦🏻 Also they made it extremely hard to (finally) delete things instead of buying more storage when it officially ran out of space. (I would like to remove myself entirely from Google, but the account is decades old and I ran out of steam after getting off the other accounts. Eventually.)