I can’t find any books for playing against the Rossolimo in Sicilian as black?

I play 2.Nc6 in the Sicilian and most players play Rossolimo against me... But there seems to be no books for playing against it, all of them are for the player with white pieces

watch youtube videos on it. I recommend looking at gj chess on yt and he comes up with a trap against rossolimo

Books are so last century. Use a data base and look up games with your variation.

you have to get a repertoire book on the 2 nc6 sicilian. or a repertoire video. it's too short to be a book on its own and also that would limit marketability so unless it's free you won't find material on it. most recent repertoire books on the main line sicilians, assuming you play one, have the anti-sicilian section and the rossolimo should be a huge chunk of it.

also i think there is a chessable video dedicated to all anti sicilians regardless of which sicilian you play as black, again only covering the main sicilians.

Look up Grandmaster repertoire books on sicilian. Don't ask any more similar questions I already gave you an answer BEST of the BEST is Grandmaster Reporter books by quality chess they are many of them written specifically on sicilian defence, how to play white , how to play black anti sicilian etc.....

Remember if you want books BEST of the BEST is Grandmaster Repertoire books by quality chess , just do your research on Internet or just by 2 or 3 different ones on sicilian , that way you will be covered no less then a Grandmaster.