There is no evidence, far as I know, that Compsognathus hunted and killed human-sized dinosaurs. The movie The Lost World is a poor reference to rely on because it's a hollywood movie. It is not completely scientifcally accurate. If you want a more reliable resource in understanding how Compsognathus might have lived, the best resources would be dinosaur information books, dinosaur documentaries, or articles online.
And there is no evidence for any new episodes of LBT being made, far as I know. I have not seen any official word from Universal, and unless Universal has made an announcement of an upcoming episode, I will not believe that there are any new episodes being made.