I believe dinosaurs existed.
But I can understand why some don't believe they existed.
When I was young, I would go to the Cleveland Museum of Natural History
and they had a t rex on display, the skeleton.
When I went to the museum in school several times the teachers told
us that was a real dinosaur.
I thought it was real, until I was grown and old and found out it was a model.
Then researching fossils.
Fossils are not bones they are minerals and many museums that display fosils
are displaying a plaster caste of a fossil and the fossil is in many museums.
So I can see why some people believe the dinosaurs did not exist.
The world is full of misinformation.
I grew up watchiing a cartoon where Wile E. coyote chased the road runner who always got a
way because of his super speed.
It turns out that a roadrunners top speed is 26mph and a coyote can hit 40.
You have to research what you believe.