Iam new on Scholar, and iam only lvl 43 now with scholar, but struggling on tank healing when they pull a lot. I got a few flames from other players.

When the tanks pulls they got only 50% life, running around corners or something stupids. And when i start healing cast Adloquium (Barrier healer i know that) but when i cast Physick after that the barrier its long gone from that much dmg from all the Mobs.
And i cant heal the dmg that the Tank get out. Its normaly or i make something wrong? or will be it better in higher levels?