Most of the time, you will need 2 tanks

I dont know why so many people 1 2 3 or 1 3 2, you need 2 tanks almost every game. Either, you have a frontlining tank who is just getting way too much damage outputed into them to heal, or you have a dive tank and no one to peel for supports. You Either need 2 frontline tanks to push forward so the damage is split into two making it atleast possible to heal, or one frontline and one dive or off tank so you can protect your supports and kill the other team supports.