Samsung Galaxy Watch7
Ending running applications
Some applications aren't ended completely when you return to the home screen. If you don't end them from the list of running applications, they keep running in the background which may slow down your smartwatch.
Slide your finger upwards starting from the bottom of the screen.
Press the running applications icon.
To end one running application, slide your finger upwards on the required application.
To end all running applications, press Close all.