You're probably using it wrong. I never see the stuff people complain about. When one of my half-dozen Facebook friends posts something, Facebook emails me and I click the link for that specific post and don't see any other crap. I also occasionally participate in some local-only groups which don't have political ragebait or soft porn, just local people posting silly things they saw in the street or local marketplace groups where people sell their household junk.
I don't even know how to find this feed people keep talking about.
That's literally it. If you don't have a suite of adblockers and extensions like FB Purity installed, you'll probably see a ton of crap. If you don't see a ton of crap, I would love to know what sort of wizard spell you have cast to ward it off.
Oh, I see now that if I scroll down it starts to include short videos and ads and random crap. I don't pay attention to that, probably because it's clearly nothing personally relevant to me and just lowest-common-denominator internet drivel. If I'm typing in facebook.com, the first thing I do is click on one of the groups I'm in, marketplace, or messages.
I don't even know how to find this feed people keep talking about.