Real Media Library allows you to create visual galleries on your website, which automatically and dynamically reads content from a folder. There are different ways to do this, depending on which additional component you use.
Dynamic Gallery with Gutenberg
If you are using Gutenberg as your go-to page builder, you can easily create a gallery from the Real Media Library Gallery block:
Dynamic Gallery with Shortcode
If you are using still the Classic Editor or another page builder like Divi, you can still create dynamic galleries from a folder with a WordPress shortcode:
The folder-gallery shortcode accepts all gallery attributes, too, learn more about them here.
Where do I find the folder “fid”? You can find the ID of a folder easily in your media library. Simply select a folder, afterwards click the three-dots icon in the folder toolbar. A dialog opens and in the bottom right corner you can find a number which represents the folder ID.
If you are not satisfied with the above galleries, you should definitely have a look at the following plugins which also allow you to create dynamic galleries from folders: