Problem!
My Google account is more than a decade old now. 15 GB for free storage seemed absolutely fine until a few years back, when I started running short of storage space with lot of my storage lost to Google Photos. While per Google "High Quality" photos/videos are not counted against your storage space, if your photos/videos are not lucky enough to get auto-converted by "Google Backup and Sync" application to the "High Quality" format, the size of the files then get counted against your storage quota in Google Drive.
What did I do then?
I deleted some obsolete files. I then created a shared folder in my wife's Google Drive account and moved around 9 GB of archived files to the shared folder located in my wife's account.
