Thanks for your replies.
Funny thing is. Since I've posted that message I haven't died once
I guess that also sometimes you just get really unlucky and encounter (green named) some mobs that can kill you in 2-3 shots. Combined with the large numbers of mobs in a pack makes it easy to lose oversight.
Added to that, since i'm a newcomer I don't know what the mobs do. So I didn't prioritize properly.
It's good to know that my build isn't wonky.
I'll see myself getting to lvl 100 with this character now ^^