There seems like you had not a lot of training on the mechanics of the fractals, this games relies a bit more on skill rather than bruteforce gear, but i would recommend you getting some green items before trying to do whacky stuff, it's not 100% necessary to grind dungs in order to succeed at them.
Dungeons aren't the important part. You want to get the best gear available to you via crafting, friends, gold etc, then spend time getting to know your profession. I went into fractals with my 70 warrior, 2 80 guardians and a 38 guardian. We knocked down everything on the first difficulty. First is knowing your profession, second is learning the encounters. After that it's smooth rolling!