Yes, you can. Usually, there should be an option in the app (depending on which platform it is) to manage your story settings. Look for something like 'Hide from' or 'Remove from' in relation to that person's private story.
Well, in most social media platforms that have private stories, you are able to remove yourself. For example, on Instagram, if someone adds you to their private story, you can go to your story settings. There, you'll find a list of people whose stories you can view. If you find the person with the private story you want to remove yourself from, there should be a way to either mute or completely remove your access to it. It's all about privacy settings and your control over what content you see.
Most likely, yes. Different platforms offer different ways to do this. Some might have a straightforward 'Remove from Story' button, while others could require you to go through a few more steps. For instance, Snapchat also has private stories. If you're in a situation where you want to remove yourself from someone's private story on Snapchat, you might need to look at the story viewer list. Find your name in relation to that particular story and see if there are any options to remove yourself. This gives you the power to control your own viewing experience and privacy.