Playstyle & Rotation
Press Fracture as often as possible to generate as many soul fragments as possible as well as generating pain to use on either Soul Cleave or Spirit Bomb. Press Immolation Aura as often as possible as well to generate pain and deal damage. Generally, as a tank, you want to know when things are about to hit you so you can predict and preemptively press an ability to mitigate the enemies hit. Sometimes you want to pool your pain but generally, you never want to cap pain.
Also if you’re running the “Sigil Build” you want to press Sigil of Flame, Sigil of Misery, Sigil of Silence and Sigil of Chains as little as possible. If you are using Razelikh’s Defilement you want all the cooldown reduction to go into your Elysian Decree. But you should not be shy to use your utility in both raiding and M+ as that is one of the Demon Hunters strongest advantages.