Looking for a Silent Mini-Fridge for My Dorm Room

Honestly, those mini-fridges will always make some noise because of the compressor and the way they work. But a lot of people find they become unnoticeable over time, especially if you keep it on while studying or at night. If yours was really loud, though, it might have been defective. You could consider something with a different cooling technology that minimizes noise, like a thermoelectric model. Just be aware they might not work as well in hotter conditions.

You're right that nothing is completely silent. Most fridges will make some sounds. I've stayed in places where the fridges were pretty quiet. If you're really sensitive, though, it might help to look for models specifically advertised as quiet. Some even have sound ratings you can check. And yes, just like @fReNzz_93 mentioned, many people just train themselves to ignore the noise after a while!