How to target NPC when multiple NPCs in front of you?Follow

Hello,

I have a problem:
Often times I engage in combat with multiple mobs simultaneously. When the target is killed, I am still in combat with other mobs, however, I am no longer 'targetting' them.

Therefore, when I try to cast magic (/action "Fire" <t>) it says it can not cast it on myself (which is good, but, I'd rather it just cast it on the mob).

I then try to 'click' on the mob with the mouse, but my own name/health bar gets in the way, and it is very difficult to click on the mob instead of myself.

I find that I have to run away from the mob, move angle, and then click on them before I can continue attacking.

This is a bit inconvenient, and does mean that I take additional damage (and time) before I can continue fighting. Has sadly resulted in a few deaths and lost chains because I had to spend up to 5 seconds to find out: Oh, I'm no longer targetting an NPC! Oh, I can't click on them. Move.. move.. click.. okey, now.. oh.. died v.v;