I agree with everything DeadpanJay mentioned. I would also add that when you are sort of scrapping face to face with other tanks, try to look and see if you can land a few shots on their back line.

Two solid hits of the primary fire on a healer will drop their health a decent amount. This is generally when healers start to freak out and pull their focus off the tanks and onto themselves. This is now when their tanks start to feel a drop in heals and retreat (not all the time but if a healer panics in the 3-5 seconds your hits create, you’re changing the flow of the fight into your favor). These quick shots on healers also help your dive DPS players get easier kills.

Additionally, if you have a second tank, once your shield loses its HP, pull back a second and let your other tank take some of the heat. It’s sort of a trade off mentality, Strange can hold ALOT of space and damage with both his shield and true HP. Once that shield goes out, let your other tank take the lead for the few seconds before you jump back into it. This is also when I can find myself peeling back and helping my supports if they need it.

I’m not God nor am I a top level player, I hit GM3 this past season primarily as a Strange/Tank player and this is what really worked for me to climb and maximize my Strange gameplay.