If you want to tame brontosaurus then don't see the level They will kill therizino, spino, rex and many just get lystrosaurus atleast 2 they will make bronto level up fast get a petreadon fly up a cliff if there is no cliff is nearby just hit it and fly in your petreadon fly where cliff is get tranq arrows head shot it it will easily run away keep hitting until it fall feed it narco berries bam you have tamed bronto they get many narco berries making easy to tame any herbivores
If any dino comming to kill you, go near Bronto's leg and make the dino behind u to hit bronto and run away from it. If bronto is behind you go near titanosor's leg and make bronto to hit and run u r safe. If titanosor is behind you and u have many resource Make a bed or sleeping bag while running, place it and go and stand in front of titen like said u r stronger than it, it will kill u, u respon on the bed and take back your things😀
Tip : Don't put wooden / metal spike walls near your base if you live in an area with a lot of sauropods.
this is why : since they like to wander around, There's a chance that they will get stabbed by the spikes when they wander near your base. And they will get mad at you, kill your tames, and wreck your base.
so please be careful and think twice before setting up spikes near your base.