It's possible. For example, if you share your login details with someone or if Instagram's system flags your story for some violation, it could be deleted. But usually, only authorized persons or the platform itself can do it.
No way. Your Ig story is your property in the Instagram world. Only you can manage it, including deleting it. Unless there is some major security breach where someone gains unauthorized access to your account, which is a very rare and bad situation, but under normal circumstances, no one can touch your story.
Sure. Instagram allows users to delete their stories. If you want to do it, find the story you want to remove. There will be options available that enable you to delete it. It's a simple process designed to give users control over their content on the platform.
Sorry, you can't. Instagram doesn't provide that kind of notification. But some third-party apps claim to do it, but they might not be reliable or violate Instagram's terms of use.
As of now, Instagram doesn't notify you when someone takes a screenshot of your story. So, no, you can't really know if someone has screenshot your Ig story.
As of now, unfortunately, Instagram doesn't give any indication about who has screenshot your story. It's a bit of a bummer for those who might be concerned about their content being screenshot without permission. But it also means that users can share and view stories more freely without the worry of being tracked for screenshotting.