Did you check the documentation?

See chapter 2.1: After linking to the entity, you need to place and configure an image widget inside the carousel.

I selected the same entity in the data source for the dynamic image widget as I did for the Carousel widget. And it works like a charm

Check this ss for the reference

All the error are solved now, but i want to add image from Myfirstmodule=> Images folder.

How to add images from this folder into banner because right clicking also add widget is not coming.