Fairly new to the game and have some build questions.

First time really playing this game since Diablo 3. I’m running a Necro at the moment and just got to level 150. I’m running a blood wave build my friend showed me. Ha I g fun with it so far but I am extremely squishy in anything above Torment 2.

Are there any good, or better build for running in torment 3 or 4? Is blood wave viable for those difficulties?