Because in Germany all big media puts forward a single narrative.

For example in countries like the USA, Poland, the UK and many more you have huge media empires that are against the current government and others for it (depending on who is in power at the time). In Germany this doesn't exist. All major media outlets are for the government and they repeat the same views on huge range of topics.

Also actual censorship. See here in the section 1990-present: https://en.m.wikipedia.org/wiki/Censorship_in_Germany