I'm sympathetic to people's issues but really, simply saying "I should be able to clear it because it's called normal and I'm normal" is absurd. It's tuned to require attention to mechanics but not to have particularly punishing DPS/healing checks which is exactly what Blizzard intended, and it's entirely appropriate given that LFR exists for everyone who isn't interested in learning/handling mechanics. ICC normals were fine at the time but would be dramatically undertuned today given they added LFR to the game to cater to a wider range of players. The problem in ICC was that normals were easy and puggable and heroic modes aside from Lich King were also pretty easy. A fairly large number of heroic guilds cleared to 11/12 in the first weeks of the patch, leaving nothing to do but grind away on a very hard limited attempts boss. The introduction of LFR was meant in part to create something for the middle tier of player to do so that heroics didn't have to be tuned for them. With LFR in place, that can be easy, heroics can be genuinely hard, and normals can be a challenge without being overly punishing.
If you're undergeared, go get gear, there's 16 bosses last tier to farm it from.