HA

Actually, one got hit. With white paint. Of course, it was one of the stormtroopers with the cool helmet that gives them good aim. IDK what they're called.

Some people have theorized that the Storm Troopers on the Death Star were intentionally missing to "herd" the Falcon Crew back onto the Falcon so they could track them to the Rebel Base.
From what I understand, Vader's Fist at that time was still made up of high quality Fett Clones-both old and new. Fett Clones were expensive, but Vader felt more connection with the Clones he served with during the Clone Wars than normal humans, so he was able to have what was leftover of them designated for his personal 501st.
Now, the stormies up to that point, from what I understand, were birth born recruits who had decent training. Not Fett Clone good. Not even First Order good. But decent training and morale. In Legends, the Empire would fill quotas with cheaper, alternative flash memory clones or "flash clones", made by other corporations with different people's genetic templates. These clones were of low quality, about like b1 battle droids in armor, and often had mental illness (clone madness). They were probably the cannon fodder liability until the aging Fett Clones could train their successors, be it human volunteers or the next wave of Fett Clones designated to Vader.
From what I understand, in the period between episodes 3 and 4, the Empire tried to make it's military evenly divided between humans and clones, at least in the Stormtrooper Corp. That was EU, though. DisCanon looks to be different.
Obi Wan Kenobi said that "only Imperial Stormtroopers are so precise." Since he'd been in exile for a better half of 2 decades, he was probably referring to when the first Stormtroopers were still all Fett Clones. You saw Vader's Fist Wipe out Rebel Marines and Alderaan Guards with relative ease at the beginning of the movie. Obviously the Stormtrooper Corp had to have done *something* right to maintain what the Fett Clones conquered before them, especially those that were Fett Clones.
When the Death Star blew up, one source I heard stated that it wiped out a good chunk of Vader's Fist. One source said 2/3 if I heard it properly. Now depending on whether it was Legends or Canon, Vader had to hand select above average human stormtroopers to fill in the void left by his sudden loss. I wouldn't be surprised if Vader had some more Fett Clones on their way, but he probably needed something to hold him over until then.
If we connect it with Legends, the Thrawn Trilogy and Duology cover batches of clones frozen on standby that he utilizes.

Again, this is my understanding with probably a little headcanon bleeding through. I'm sure some nice folks on Youtube have more in depth videos on the subject, but this is what I gleaned from their work and wookiepedia:
After the First Death Star blew up, the Empire had to do a lot of damage control. They just pissed off a lot of people with the destruction of Alderaan, the "heart of the Old Republic", and had exposed that they were planning on holding a big gun to the rest of the galaxy after disbanding the Senate (the Monarchy no longer being constitutional, now more of an obvious Totalitarian Police State Dictatorship).
So the Empire, at first pretending to be a nice boyfriend to your single mom, just shot your grandma, just cut the cord so you couldn't call the police, and was holding a gun up to you, and then the destruction of the first death star was like the dog stealing the gun from his hand. Woops. Oh ship. Now what? Well from what I understand the Empire had to scramble to do what they could to keep the galaxy under control because the jig was up. So they started forcefully recruiting and conscripting as many humans as they could before they could be recruited by the rebels. Probably pumped out the occasional batch of flash clones to fill quotas, but their main focus was getting a bunch of humans into stormtrooper armor before the rebels could get them into camo b.d.u.s.
The Empire was in such a hurry to get as much ground covered that they rushed their training of the new Stormtroopers with their already inconsistent military training academies. The Empire was always dehumanizing, as a lot of militaries have to be, but the empire focused all on the "break em' down" part but not so much on the "build em' back up stronger" part.
They promoted fanaticism to the Emperor's cult of personality, and fed into a lot of people's hatred for chaos, political dissidents, and aliens, but they didn't inspire a lot of comraderie to their fellow troopers or patriotism for their people. It didn't help that some of the Imperial Officers were more business men or politicians serving just to advance their careers, and were prone to compete (and later, after the empire started to fall, kill each other) than cooperate. Morale was low on top of the rushed, inconsistent, and fear based training. A balance of self preservation and self sacrifice was achieved, but it was done in a demoralizing, harsh, some might say nihilistic way.
"Duty is the mistress of fools."

so many shots fired none hit

Haha

Lol

Oh, oh.... lol

i get it !

A C C U R A ... i mean ... N O T A C C U R A T E

Irony 100