How to show a block between the body and a paragraphs field? For a larger article content type on a Drupal 8 page, I want to have the following structure:

Title Image/Video

Body (the normal node body with the title and some text)

A contanct block

Paragraphs

For the title image/video I'm not sure yet whether I want to simply create 2 different article types or find some magic to do either the one or the other, but that's fine.

The body that comes next, will just follow as is and contain some introductional text. I guess, I have to write my own template to be able to place the image before the title, but that'll work.

Then, I want a simple block that contains some simple contact information (probably the same block in every article).

Then, there should follow a paragraphs field that'll hold several paragraphs for the rest of the article.

Do you have any ideas how I could place this block?

Thank you in advance for your help :)
Enable "Layout builder" module first. On "Manage display" in entity config Default "Custom display" enable "Full content", then go there and enable "Use Layout builder" and "Allow each content item to have its layout customized."

This will give you "Layout" tab in each node (of this type where you enable this in config) for ex. - how to arrange each field of this entity, also ability to add custom block, user fields, etc. If you want Contact form there you should probably have to write custom block in custom module and put the form inside - just to have it for placement from the Layout builder.