Hi Tom! Thanks for the answer. This is what I needed the final pdf to look like:
Captura de pantalla 2025-12-10 a la(s) 17.11.02.png
That was exported in the print window, by my friend who uses Windows.
As I show in one of the screenshots, the option for preserve colors, so I can separate them in acrobat, doesn't appear when I export:
Captura de pantalla 2025-12-10 a la(s) 17.15.06.png
On the other hand, I already have the PPD file in my Illustrator folder, I even used it last year in Indesign, but apparently (this is what ChatGPT told me anyways) Adobe stop using PPD with Mac or something like that, but there is not other option besides those two.
As described above, you can use the Print dialog to select a PPD when choosing other.
