F-Droid. And also by Google's definition, everything I install from F-Droid. So Antennapod (Podcasts), ConnectBot, DAVx (sync my Fastmail calendar to my phone), Etar (Calendar app), Jellyfin (media player), Jiten (JP dictionary), KOReader (ebook reader), OsmAnd~ (Maps), VLC.

Meanwhile from the Play Store I have Bitwarden, Firefox, 2 banking apps, a few airline apps, Wireguard and Whatsapp. So I actually have more from F-Droid than the Play Store from what I regularly use.

Why not grab Fennec from f-droid as well? It used to also have more features, I'm not sure if that's still the case but might as well go with the open source build