Image wrap issue

Hi I’m trying to build a page with a list of images with descriptions, but if I use the image wrap, it’s impossible to add returns, and the images pile up next to each other (not sure how to explain please see link). I’ve tried modifying html with <div> but no joy.Wordpress just gets rid of them when I save it.

I have repplicated the issue here
https://www.iberianature.com/learning-english-through-nature/rural-test/

Many thanks