I would say to find Giga by using hunt giga that’s how I found my 19 giga all of them muteadted by 2 females and 1 male btw u will need 4 giga sized gates and giga sized gate doors to trap it by leaving on unlocked and the rest locked as the unlocked one will stay open for the giga to pass tro and then close the unlocked gate way and then get on ur giga sized gate way and then start training ur way to secession and Alfa
I was playing on a nice multiplayer survee with nice people, I got a bronto, mutated blue wolf, eerie tapejara, and an argie. I join a tribe with someone and we go to his base (on the back of fars peak and right across from carnivore island) and one day I spawn in, and see one of my arges died, I'm like oh. It must have starved. That's sad. Then I look at the logs and see "your dodo has been killed by a giganotosaurus!" I instantly start panicking and I type in the chat about it. Everyone is curious. Low and behold I see a giant giga tail right next to my flimsy base with spike walls. It agros on me, and I start RUNNING. My bronto attacks it and the behemoths fight. My bronto's death was not in vein though. I had enough time to save 5 out of 17 dinos. I'd say that's pretty good compared to nothing. I still have their graves to this day.