I recently tamed a lvl 167 tek rex and i suggest having 150 arrows (or more) if its above lvl 100 (you don’t beed to that many but always bring extra incase) for beginners 4 stone dino (not behemoth gates) or metal and place 3 like forming a square but leave one side open put a large bear trap in the middle and get the rex to go into the middle of the unfinished square and let it get stunned by the bear trap go to the other side where it was open and place the final gate there finishing the square( this is the easiest method) for beginners you can bring more gates or bear traps large if you want and also bring a fast tame if you don’t wanna risk it although you’ll probably be fine without a quick raptor or tame.