More robust layout in a post - does it require custom HTML?

[jannis]

There is no built-in way, no:

Why is there no wrap image in text option?

There is no simple way to wrap images in modern html/css, it would need to be done in a different way for every theme that uses a different type of layout (float, flex-box, grid, etc) and would be very dependent on the surrounding content in a post. Because of that there wouldn’t be a way to have what you see in the editor reliably match what is shown on your website. If you use a HTML card you can add specific markup that works with the theme you are using in the context of the surrounding con…

In that thread there are also a few suggestions for HTML snippets that might help you