Why is my entire feed in this Lemmy server nothing but American politics and Reddit bashing

I came to Lemmy cause Reddit went to shit, so I get that people want to bash it and I also understand that most of the users of Lemmy are from the US and the shit show that's happening there right now, but I am absolutely tired of these 2 types of posts being the only thing in my feed, I open this app because I want to learn new interesting things, and maybe see some funny and creative stuff, there's enough negativity and stress in my life and I don't need more of that on my only social media app. How do I filter these topics from my feed and which communities can I join to improve my feed.