An integrated threat protection solution designed to detect, investigate, and respond to cyber threats across Microsoft 365 services.
For home users there is a version of Microsoft Defender that runs on Android. You can find more info about it here:
Getting started with Microsoft Defender - Microsoft Support
Note that it requires a subscription to Microsoft 365 Family or Personal. If you're not a subscriber and want to try it you can get a free 1 month trial of Microsoft 365 Family and see if you like it.