List your most often used and favourite foss application on your Android phone.
Antennapod, KDE Connect, … way too many to name. F Droid (in my case Neo Store) is a great place to search. If I search for a certain use case, I check out this Github Repo that lists very good FOSS apps
Simple Gallery (and the Simple Mobile apps in general), AdAway, SDMaid, Magisk, Firefox.
an open source notes app of course, an opensource keyboard app, there are a lot of good things in those categories. also, back when i read ebooks on my phone i found a really good app called comfort reader that automatically reads books for you and stuff, and there are also other great reading apps
RedReader - a fantastic Reddit app, that hopefully will support Lemmy in the future.
Voice for audiobooks, Geometric Weather, Tachiyomi, Feeder for RSS, DCSS & Shattered Pixel Dungeon. All FOSS and all very good.
