Microwaves are so baffling in their design.

Its like every manufacturer conspired to create the loudest door mechanism, the most agressive beeping tone, the least haptic input panel, the hardest to clean interior, and when discussing a standard for how to do low power or defrost cycles, decided that the only standard was that everyone had to do it slightly differently.

Holding the number 2 for a few seconds typically does the trick, some newer ones have screens with menu settings, some cheap ones like mine don’t have that feature at all so you take it apart and remove the speaker or live with the signal fires being lit at 3 am

my friend in high school had a parrot that would mimic the microwave beeps all day. They had muted the microwave years ago, but he still remembered and still did it every day