If you can’t login to your Apple devices, you’ll soon be able to assign Recovery Contacts for your iCloud account, as announced at WWDC21. These contacts you assign will be able to send you a code to log back into your devices.
Also, there’s now a Digital Legacy feature for iCloud, to let someone you assign have access to your account when you pass away.
Apple also is debuting a paid iCloud+ service, which offers private relay for secure transmission when surfing the web, along with Hide My Email and also HomeKit Secure Video.
…developing, refresh for updates