I asked him what other backup was available, and he said " Google Drive" I at first thought he got the wrong Trust wallet, and asked where he downloaded the wallet from, but he dropped me the official link, so I headed into my Trust wallet which has used for some while now, and it asks me to update to the latest version then I saw that they have added an option to backup using "Google Drive".
Wallet backups must be stored offline, not online, and not in any cloud storage.
Because cloud storage means online environment and you have to rely on their cloud storage provider to secure their data base, and your account security too. You can set up strong password, and activate 2FA for your account but if that platform database is compromised, hackers will steal your account. Worse, they are hackers so that they have tools to automatic scan and find cryptocurrency wallet or backups.
How to back up a seed phrase?