This is not true for the major social media sites that control the algorithmic feeds. (Facebook, Xitter, Reddit, YouTube...)
While you may be able to add a small bend to the feed, it's really 90% in their power, not yours.
I'm looking at Facebook "Home" feed. Funny how they added a separate "Friends" feed, the original purpose of the site, that's not the default.
For Reddit, you can select an option so that it only shows you things from subs you follow. Dramatically improves the experience!
IDK, I still find my Facebook and Instagram feeds very topical and useful to me, so I keep using them. I also curate aggressively, have a wide variety of interests and a few hundred close connections. It could be that I am just fitting into what the algo is steering to, but I don't get the low quality stuff that OP is complaining about.