Image fields allow editing of the media related content. Click on the edit icon after adding an image brings up the editor.
A gallery field allows editing these fields by selecting an image.
ACF fields that use images save the image to the media library.
Everything that you are looking for, as far as I can tell, is built in.
I don’t understand why you are adding fields to media for title, captions and description since these are built into WP.
