Piracy: ꜱᴀɪʟ ᴛʜᴇ ʜɪɢʜ ꜱᴇᴀꜱ

Hey, I'm not sure if it's allowed to ask for help on hunting for specific files but this doubles up as a question about the best place to get books.

I've been looking far and wide for the renegade game studio's Transformers rulebooks and managed to find the core rulebook from some weird site but not from any of the book or torrent sites. But I'm still missing the accompanying books like the campaigns and the expanded character sheet journal. Could anyone smarter or more resourceful help me with this hopeless quest?

And also the last time I pirated books was so long ago that people were offering them on their own websites basically, what is the best place to find books nowadays? And is there a way to submit the rulebook file I found to book piracy site like library genesis? In case someone else comes looking for it as well.