As said earlier, one of the issues is that for the most part, there is no reason to go to normal mode. I did plenty of dungeons and even Titan (ended up kiting Titan after bard and paladin died and OB'ed (I got stoned)) with fairly low level gear. Heck, I solo'ed Stone vigil's first boss (level 41-43) with like level 25~30 gear with a few 35s). Early dungeons are pretty easy. Trials are a bit hard. End game dungeons can be hard without good gear.
What is bad is when you say you are a new healer and NOBODY tells you ANYTHING even after you ask for anything important that you should know.
Literally for most boss battles such as some end game trials:
Me: (This is my first time)
Me: Anything I should know or do for this fight?
Tank: [no response]
DPS: Just heal.
DPS2: Don't get hit.
Me: By what?
DPS2: The attacks.
Me: How do I dodge them?
DPS2: Just don't get hit.
Tank starts fight.
Party wipe because I had no idea what I was supposed to dodge and died out of confusion. (like when a certain mob AoEs you and makes you lose control (lose control, run into AoE to die)). ENTIRE 8 player party knew EXCEPT for me. Down a healer, party wipes. About 3 times. Each time: What should I do? Each time: Heal us!
Even worse is when someone overwrites my function set by giving me a command mid combat without giving me an exact command.
Example: I'm healing tank. Tank goes: USE HOLY!
So I use holy. Right there. Where I am. Because my function set that I was using just got overwritten. Tank dies. Blames me. (I am similar to a computer in a lot of ways so if I'm given a command without any preparation, I will follow it-reasons why I generally don't talk to humans near bridges or anything that could quickly do serious harm to me.)
I've had one tank that gave me really clear instructions though, that was nice.
"Use holy where I am"
Even better commands would be great except they can be hard via text.
Like one person in a game (with voice chat) gave me some nice commands. "Safely and silently head over to the tower and pull up next to the ally there."