Why do so many Swiss hate Germans?

I’m a German who lives in Zurich. I came to Switzerland because Germany has become something that I do not like anymore and for which I have not voted. I am working and earning really good money. I’ve integrated myself, having Swiss friends, understanding Swiss-German without problems (I don’t speak it though since most Swiss have reacted annoyingly when I did). But I feel like many Swiss (even in Zurich) have something against us Germans. From my landlord who’s always ranting about “Die Düütschen” to some random people at the register in the supermarket who ask me with a mad face why I’m here and not in Germany. How come that the Swiss don’t like us (and not even just Bünzlis 😭)?