Per one tech forum this week: “Google has quietly installed an app on all Android devices called ‘Android System SafetyCore’. It claims to be a ‘security’ application, but whilst running in the background, it collects call logs, contacts, location, your microphone, and much more making this application ‘spyware’ and a HUGE privacy concern. It is strongly advised to uninstall this program if you can. To do this, navigate to 'Settings’ > 'Apps’, then delete the application.”
Droid-ify and Neo-Store are alternative clients for the F-Droid repository (and other repos), that you may like better than the official client. But yeah, Obtainium is indeed simple and it’s powerful if you already know exactly which app you want to install (rather than searching for relevant options in some repositories).