Here’s my example, which is an all-in-one for the OP, covering both right and wrong.
When I was a junior in high school, around 1986, I wrote a future-set SF story (long since lost) where the main character was introduced in transit, on his way somewhere, listening to a personalized news report as he went. He had a small device in his pocket, and was wearing wireless ear buds, receiving their signal from the device. The news report was personalized to his specific interests, including only stories on international finance, technology, and a couple of celebrities, with the stories expressing a point of view tailored to his own.
Let’s break it down.
Sort-of-right and sort-of-wrong: I was imagining, basically, a cross between a podcast and, say, the Google News homepage, which, as you use it, adaptively adjusts the stories it shows you to reflect your personal preferences. This combination doesn’t exactly exist; we choose and listen to podcasts, but they’re long-form stories rather than bite-size breaking news. That type of news content, we read, mostly, or skim at least, via Twitter and other text-delivery services. So I had the right notion about people using technology to create their own information bubbles, but the specific form of the bubble was off the mark.
Mostly wrong: The device in the pocket wasn’t an all-purpose microcomputer, like we all carry now with our smart mobiles. It was dedicated to the news-delivery service, and nothing more. It was basically an old iPod, but for the sole purpose of collecting news stories (plugged into a download slot at home, then carried away), and didn’t play music or anything else. (The wireless ear buds, though, were spot on.)
Very right, though now unhappily so: I imagined that everyone in the world was doing this, and that this led to wildly incompatible perspectives on reality. The hook of the story was that the personalized news report was supposed to just be interesting worldbuilding color, and then the guy would get where he was going and the story would start. Except that what he was doing was to participate in a high-tech heist, and it wound up going wrong because everybody on the team believed different things about how the targets of the heist would react when things got started. The details of the heist were dumb and the plotting was clumsy; hey, I was a teenager. But the underlying idea was neat.
And, the bit I got totally wrong: I imagined that this personalized news report was made possible because the guy had sat with a computerized questionnaire, laboriously checking boxes and setting a definition on what kind of stories he wanted, and then this static specification was used to select what got pushed onto the device. Not even a hint of the modern reality where the report is customized via algorithm, with content adapting itself automatically by eavesdropping on and interpreting the consumer’s preferences in the background.
Still. Not too terribly bad for an amateur teenage futurist in the mid 80s.