Even though I understand that you're upset, two things here:

Dodge for the love of god! Each hit you take that could have been avoided is a healing speel your healer is casting instead of a damage spell or wasted mana. If you dont want to dodge: A lot of enemies can actually be stunned, your dps benefits from that aswell because they wont get hit either. Other than that... try to make an effort and move OUT of AoEs (unless you know your healer is cool with you standing in them). Being a tank means you can take more, yes - but that more shouldnt be more than absolutly needed.

Secondly: I know its old fashioned but if you struggle to hold hate: Mark your mobs, tell the dps to stick to that order, stick to that order yourself and let anyone who doesnt have the mob they wanted to tank (just make sure that you're still above healer-aggro).