Keychains

Hey S78A,

Storing passwords in iCloud Keychain is only possible with an iPhone, iPad or macOS device. You can learn more about that here: Set up iCloud Keychain - Apple Support

"How to turn on iCloud Keychain

Before you turn on iCloud Keychain, update your device to the latest iOS or iPadOS, or the latest version of macOS, and make sure that two-factor authentication is turned on for your Apple ID.

Turn on iCloud Keychain on your iPhone or iPad

1. Tap Settings, tap your name, then choose iCloud.
2. Tap Passwords and Keychain.*
3. Turn on iCloud Keychain. You might be asked for your passcode or Apple ID password. 
4. 

Find your saved passwords and passkeys on your iPhone or iPad

Turn on iCloud Keychain on your Mac

1. Choose Apple menu  > System Settings (or System Preferences). 
2. Click your name, then click iCloud. In earlier versions of macOS, click Apple ID, then click iCloud in the sidebar.
3. Turn on Passwords & Keychain.
4. 
5. 
   
6. If you choose to "Approve Later" when signing in to your Apple ID, you need to approve with an old passcode or from another device when prompted. If you're unable to approve, reset your end-to-end encrypted data when prompted.

Find your saved passwords and passkeys on Mac"

Thanks!