Stop Running Apps - Pixel™ / Pixel XL, Phone by Google
From a Home screen, touch and swipe up to display all apps.
Navigate: Settings > System > Advanced > Developer options .
If Developer options isn't available, navigate: Apps > Settings > System > About phone then tap Build number 7 times. Tap the Back icon then navigate: Advanced > Developer options .
Tap Running services.
Tap the appropriate app(s).
Some services or apps may have multiple processes that can be stopped.
If prompted with the "Stop system service?" prompt, tap OK to confirm.