Samsung Buds don't have the possibility to mute the microphone. I can configure 1/2/3 taps or hold on left/right bud for stop/play, cancel call, answer, and ambient sound.
However, when I'm on Google Meet, slack, etc... I always mute my microphone, as many people do.
So I would like to tap, for example, three times to unmute my microphone, then tap three times again to mute back.