filter bubble

A filter bubble is when the internet, using your clicks and searches, quietly learns what you like and then keeps feeding you more of that, so you end up seeing less from the rest of the world. It is basically an algorithmic echo chamber, where your feed stops being a window and starts being a loop. Think of it like Netflix deciding you only ever want one genre, and then acting surprised when you never “discover” anything else. (merriam-webster.com