either download the official APK from f-droid.org or use the NeoStore app which is a better client imho. from there its some simple setup and basically works like the play store.

~150 total and 67 on f-droid/neo store so like half is FOSS

Funny that you compare Germany to fascist dictators now, its one of the few countries which actually worked its past and acknowledged it. Support for a Israel is a double sided sword in that regard, just dropping them is definitely not an option. Germany currently houses 3.3 million refugees and paid over 24 billion in foreign aid. Honestly, what do you expect?

Ich hab eine Sharkoon DAC Pro, Welten besser als der interne Soundchip, Plug and Play mit USB und keinerlei Kompatibilitätsprobleme. Kostet auch nur 30€