Taming method isn’t same as concept.

Required items:

Torches

Torch repair mats

Exceptional kibble, mutton, or prime meat

Good armor

Medbrews

Step one: when you find a megaraptor you want to tame look for an altar in the area. The altar looks like a thin rock pile. Make sure to clear out the area before the next step

Step two: hit the altar with a torch, this will start a jumpscare minigame where the megaraptor will sneak up on you to attack you. You need to hit the megaraptor with a torch before it hits you. Each torch hit increases torpidity. Once you have hit it enough it will knock out and you can feed it

These guys spawn pretty much everywhere, they aren’t exactly common but they aren’t rare either.