Turn off live notifications from the user profiles page:
Locate the profile where you want to disable the livestream notification and click or tap the bell icon.
WEB: Select None to disable live notifications and click on Livestream posts to enable it.
APP: Turn on or off live notifications by switching the toggle button.
Turn off live notifications from a notification:
Locate the live notification.
Click or tap on the three dots located in the upper-right corner.
Click or tap ‘Turn off livestream notifications from @username.