If you do not want to view stories uploaded by a particular user, you can opt to mute their stories.
Open the Stories tab at the bottom of the screen.
Go to the list of stories uploaded by your contacts.
Long press the story of the user whose stories you would like to mute from this list.
Select the mute option.
Or, once you open the user's story, click on the three dots next to their name and select mute.
If you decide to unmute a contact's story,
Open the Stories tab at the bottom of the screen.
Open the Muted Updates section.
Long press the story of the user whose stories you would like to unmute from this list.
Select the unmute option.
Or, once you open the user's story, click on the three dots next to their name and select unmute.