Not sure exactly how this should work but tried it with manual and only got stuck. I added the lines at the top of my csv file to automaticly get the notes into the correct Deck but that does not seem to work. This what i had:
You should take a careful look at how this is explained in the manual – Text Files - Anki Manual .
In your screenshot, you are specifying a deck for the entire file – but you are also specifying a deck column, which has entirely different information in it (N_1, N_2, etc.)
It’s hard to tell you much more than that because we don’t know what you’re using the rest of the each columns for.
A great way to understand what you want your deck headers/columns to be is to export a note you already have in your collection as plain text and see what the headers/columns should look like.