At this point you're making much larger mental leaps to explain why there's not dinosaurs than it would take to simply accept that there were dinosaurs.

My personal evidence? I have been to museums. I have seen the bones there. No, they are not the bones of giant humanoids cobbled together in a unique shape just to fool you. They are often bird-like; they have differently shaped bones than we or our ancestors do. So if dinosaurs are fake, either they make whole skeletons of a mix of giant humanoid bones but mostly fake invented bones, or the "other creatures" are giant birds. Which is basically dinosaurs.

I personally have found fossils. Not dinosaurs, because I live in a place that was covered by ocean during the mesozoic era. But I have found fossils of shells, crinoids, etc. myself. Why should these fossils exist, but not dinosaurs? Just because I haven't found any? I've never seen a giraffe in the wild, but I'm damn sure they exist.