Since the early days of smartphones, storage space continues to be a persistent problem. For Android users, that often translates to your Google account storageand with Google now counting Android device backups toward your account storage limits, it's worth reviewing your backup settings to check for any redundancies. After all, no one wants to pay for more cloud storage space if they don't actually need it. So by opting in for separate WhatsApp backups to your Google account storage, you're actually backing them up twice. And if you chose to back up every device folder to Google Photos (which you probably did during initial setup way back when), then those downloaded files might also be getting uploaded to Google Photos.