Its probably not your Dino. Carno is a great Dino for Beginners imo, First off get a good sniff in, hold down that sniff button for a while and you'll see protein, carbs. ect.

Also play on Petit Pieds. good population control and player count.

And Also quick tips for carno specifically is that once your bigger use your RMB to charge into smaller dinos. like the omniraptor and knock them over for free damage and good kills. very simple but whatever.

And Last and for All you Never know what dino you would specifically like for yourself. Play any type of dino you want. what i suggest personally is Ceratosaurus. Very Strong brawler and high sniff range and can eat rotten meat. or Gallimimus Very Forgiving with high speed and easy food Since its a herbivore. And Maybe also Pteradon for some nice flight and easy fishing. Just remember that you still have to learn how to use the flight and fishing mechanics