The best free alternative to Google Play Store is F-Droid, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Google Play Store and loads of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Google Play Store are Aptoide (Free, Open Source), Steam (Free), APKPure (Free) and Aurora Store (Free, Open Source).
Techless creates pure and simple technology for kids, families, and digital minimalists who want to simply live free of digital addiction and pornography. Techless is the creator of Wisephone; a minimalist mobile phone with no apps, no addictions, and no distractions.
This enables F-Droid to install and delete apps without needing "Unknown Sources" to be enabled (e.g. just like Google Play does). It also enables F-Droid to install updates in the background without the user having to click "install".