UsageDirect is a FOSS app that lets you see your screen time

@max641 a friend of mine (nift4) is working on something called Neo-Wellbeing, but I don’t know how far it is at this moment in time; apart from “it isn’t ready yet” at least

For now, I’d go with Fisch’s reply

If you want to install the google’s official app, you can use this workflow with microG: https://xdaforums.com/t/how-to-use-digital-wellbeing-on-miui-10-android-9.3891718/

There are other alternatives to the ones they recommend in that post. Basically there 2 steps:

• Get the wellbeing app from somewhere. If you use Aurora Store, you can download it from this link: store link
• Create a shortcut for it. I use AppManager where you can also create shortcuts for activities