For some reason beyond my mental grasp, this game has procedural generation for all of its maps. Meaning that every time you go to any of the maps all the locations are randomized. Fortunately, these are generated in chunks so you have to look for specific landmarks they might be near. It is also very possible to just not have a specific area spawn when you load into a map. I am fairly sure I didnt even see a number of the secrets spawn when i was trying to get them.
Basically, it is not a well designed trophy
This is the video guide I used. Really just gotta keep trying for it
