There is an option in the microg settings to enable SafetyNet. I can’t confirm whether it works, since I don’t have any apps that require it. I’ve heard it’s a bit of a cat and mouse game.

I don’t know much about this, since I haven’t needed it myself. But personally, if safetynet uses Google servers or code for authentication, then I’d rather just leave it turned off. Even if it breaks a few apps.

Not being beholden to Google in any way just feels too damn good.