Send notification to reactjs

Hi everyone with my deepest respect. What I want to do is I want to notify when a user inserts a document into MongoDB. I mean when I create a post, the document will be inserted and I want to return a notification to ReactJs. How can I do that? I have watched some of the videos like using change stream. However, I am still having a difficult time returning a notification to the front-end. If you have any tutorial videos or documentation, please kindly provide me with the resource. As I don’t want to use socket.io.