Noisy Fridge Stops Buzzing When Finger Is Pushed Against Door Or When Open

What is happening here and how can I get it to be this quiet all the time?

Fridge is:

Amazon.com: Vremi Beverage Refrigerator and Cooler - 100 to 120 Can Mini Fridge with Glass Door for Soda Beer or Wine - Auto Defrost Drink Dispenser Machine for Office or Bar with Adjustable Removable Shelves: Appliances

submitted by /u/PunishedConstruct
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