Recommended and mentioned products
F-Droid is an interesting alternative for Android users who want to try something different and not have to use the Goole Play store all the time.
Tusky is still on FDroid. FDroid is an alternate app store, available here: https://f-droid.org/ where you can install open source apps (including some with closed source components - the app page will let you know). Please note that updating is a manual process.
Google Play desktop client
You can search up the apk actual name or use something like this: https://raccoon.onyxbits.de/.