Jeff wants to know if Google Backup and Sync is a good way to back up his hard drive. Leo says he's used it and it works. It's not really designed to be a hard drive backup, but he can use it for something like Google Photos. But also remember that Google Drive isn't private. People can see user data online. So he wouldn't use it for sensitive data. Leo recommends iDrive because it does not only encrypt data, but it also has versioning, so it keeps versions of the data. It's a much better solution.
John can't find his phone, and he can't see it through Google's location service. He also can't get into his account because he's lost the recovery codes. Leo also recommends going to the Google "I'm Having Trouble Logging in Page" and answer all the challenge questions. Then he'll be able to recover his account and get a new code.