Setup

1. Remove Apps from Home Screen.
2. Disable Enterntainment Space (Touch and hold Home Screen -> Settings)
3. "Finish setting up" (Notfications)
4. Choose search engine (DuckDuckGo)
5. Install System Updates
6. Wait till default apps are installed

F-Droid

Install F-Droid.

Termux

Install Termux and Termux:Styling.

App Pinning

Enable App Pinning.

Timeout

Set Screen timeout to 2 minutes.