How do I dynamically store image from firebase storage to firestore using url

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Javascript

I am working on an instagram clone and need assistance with a READ: functionality.

okay,so i managed to upload an image to firebase storage using an upload button (from a div in html) and it stores the image in my firebase storage bucket and gives me a access token (which I believe is the url). so I believe the upload function is working.

I created a firestore database and linked it to my app successfully.Now I want to (1) when I upload an image to firebase storage,I need that image to be dynamically stored in firestore using the access token (URL). And (2) display that uploaded image on my UI together with username and caption.

What I have tried:

I've tried reading documentations and articles but am not getting the hints that work