A great deal of silly stuff has been written about dinosaurs, including the claim that they never existed and the whole thing is just a fiendishly clever conspiracy, blah-blah.
https://leeduigon.com/2015/06/09/did-dinosaurs-really-exist-really/
God has done things that we don’t understand. He created dinosaurs, pronounced them good, and then, it so appears, removed them for our sake, leaving only fossils and trackways behind.
Which, in all probability, is as it should be.