The Community will be undergoing maintenance from Friday February 21 - Friday, February 29 and will be "read only" during this time. To learn more, check out our Announcements blog post.
Welcome to the community, @Stefano_Pianelli! :grinning_face_with_big_eyes: Other blocks cannot be nested inside a Page Designer layout. Only text, images, and table fields are allowed. You might consider making a request in the Product Suggestions category if you feel this would be a useful feature to add.