You could try using filters or settings in the platform where you access the stories. Many have options to customize your feed and exclude content related to specific people.
First, make sure you have the latest version of Messenger installed. Then, open the app and navigate to the person's profile. You should see their story displayed there if they have posted one.
Sure you can. Usually, you can find the option in the privacy or settings section of the app. It might be a bit tricky to find depending on the specific platform, but it's there. Just look for something related to story visibility or audience selection.
You can usually do it in the settings of the app or platform where you're getting the notifications. Just look for the notification settings and toggle off the story notifications option.
To block stories on IMO, first open the app. Then navigate through the menus to find settings related to content display. It's likely there'll be an option to disable or block stories there.