Hoi AtomicToni,
Sorry to tell you that your map have been rejected.
The theme is not really original, because there is already a few "Dinosaurs" maps, try to found a better theme next time ! The build could be better, the T-Rex looks cute in my opinion, but the rest could be better, there is also a few amount of floating blocks, making your map messy, be careful next time ! The parkour is not really good, it's really repetitive, try to use more different type of blocks, like ice, slimes, soul sand or iron bars. I also think the map is a bit hard for a medium.
Thanks for submitting your map, would be really good to see more maps from you !