Hello Gabriele,
This is not a question. Do you also have a question?
Also, it is not good practice to say that you want the bio-fiber to be better beforehand, and that this is the goal of the assessment. I am expecting that several impact categories such as land use, and possibly ecotoxicity and eutrophication (especially if the hemp is grown conventionally) will be more impactful for the hemp fibre.
Remember that LCA is nuanced, and you need a way to navigate these nuances.