The Tyrannosaurus Rex, primarily known as the T-Rex, is arguably the most famous dinosaur species and the most iconic one in the Jurassic Park franchise. It was also intended to be the star attraction of John Hammond's park, and for good reason. However, ever since these creatures arrived at the mainland after the events of Jurassic World: Fallen Kingdom, an abundance of other predatory species and competition for resources may lead to the eventual extinction of these creatures in the distant future.
Source:https://www.cbr.com/jurassic-park-t-rex-may-not-survive-humans/