Yes, there is a ton of misleading garbage out there trying to trip up earnest Catholics with a great love for our Blessed Lady - especially to serve their agendas that are often at odds with legitimate authority in the Church. Remember also that if you are reading in English, the Fatima material is in translation. Some of these translations were done a long time ago and some words do shift meanings slightly over time.
As somebody else said here, stick close to published (not internet) books written by reputable authors with footnotes, etc., so they can be looked up. I have seen many, many completely false and incorrect things online.
Unfortunately, Fatima is one of those Marian apparitions that seems to attract a lot of fanatics. That’s not to blame the apparitions themselves or true Christians who find them helpful to their spiritual lives, however.