Yo, algorithms are like that friend who always guesses what you’re craving. They scrape your likes, comments, how long you watch a vid, even the time you scroll in the dark. Basically, the more you vibe with something, the more of that gets shoved into your feed, like a personalized vending machine that never sleeps. It's a mix of data, machine learning, and a dash of that sneaky bias that keeps you hooked.