You can see who viewed your Facebook Stories . But beware: When you view someone else’s story, you are not anonymous. Your name will appear in their viewer list. There is no third-party app that can hide you from story viewers. Apps claiming to let you watch stories anonymously are lying; they will just take your data.
If you want to know who is interacting with your content, look at : anonymous facebook profile viewer
You can see who likes, reacts to, or comments on your posts. Non-Friends: You can see who viewed your Facebook Stories