What icloud features can I use with android

See System requirements for iCloud

Cloud requires an Apple ID, an active Internet connection and up-to-date software - being macOS or one of the varieties of iOS.

Android phones are listed nowhere. You will need to use an iPhone.

You might be able to access icloud.com using a browser on your Android phone.

You can, however, use Apple Music through the Android app. See Join Apple Music on Android.

As the article at the top of your post indicates, you’re limited to what is available in a web browser login.

Which iCloud.com features are available in the browser on your device - Apple Support