Have your watch silence your phone

Wearing a device that lights up and vibrates when you get a notification makes your phone's beeps and buzzes for the same notifications redundant. Wear OS has a handy feature that silences notifications on your phone when your watch is on your wrist, saving you from unwanted noise. Notifications on your phone resume when you take the watch off. Accessing the feature is different on different watches.
The setting is easy to access on a Samsung Galaxy Watch 4 or 5. Go to your watch's Settings, tap Notifications, and then turn on Mute notifications on phone. You'll find the setting in the same place on the watch and in the Galaxy Wearable app.
On other Wear OS devices, the setting is only accessible in the mobile app you use to manage the watch. In the Pixel Watch app, for example, the setting is accessed by tapping Notifications from the app's homescreen and then tapping Mute notifications. In the Fossil app, go to My preferences and select Sound and Vibration.
For watches still not on Wear OS 3 or newer, go to Settings in the Wear OS app, tap Notifications, and then select Silence phone while wearing watch. There are separate toggles for muting calls and muting other notifications. Make the selection that works for you.
https://www.androidpolice.com/