A mentor I used to archery hunt with became so excited he bit through the stem of his corncob pipe one morning when some whitetails approached very closely. Never even got an arrow off due to his excitement.
Hunted moose with a guy that became so excited he functionally locked up. I wa spotting for him. Let him know the bull moose was legal to shoot. Told him to get ready, that the bull might appear in the one and only opening allowing a clear shot. The bull obliged us and stopped in the middle of that opening, perfect broadside exposure. I had already put the earplugs in and told my buddy again the bull was legal. Go ahead and shoot. I turned to see that my hunting partner didn't have his rifle in his hands, didn't have any shells in the rifle, was searching for ear plugs and for his shells, and had done nothing to prep for the 375yd shot. Brain freeze. The bull move on and he never even got off a shot. This was a second event for him. He'd been a law enforcement office for 10yrs. Simply too much excitement to maintain mental/functional control. Know another guy that ejected every live round in his Remington pump action 30-06 as a mature dall ram ran past him. He fired one round. The animal couldn't climb up and away. It turned and came toward him and cut across the face of the hill above him - 75yds away. He thought he was shooting and couldn't understand how he could have missed. He was so shook up he couldn't even stand or speak. His legs wouldn't support his weight. He didn't believe he hadn't fired the rounds until he'd calmed down and his partner pointed to all the live rounds laying on the ground where he said he'd shot from. Pretty nuts.
There are multiple reasons bad shots occur when hunting with recurve and long bows while shooting instinctively or even with a couple simple pins being used for sights. It can be as simple as the deer jumps at the string noise and moves before the arrow reaches them. My best three archery shots ever were all foiled by animals that jumped the noise of my recurve bow string. One red fox, one whitetail deer, one caribou. They were all longish shots, and arrows that would otherwise have been through the lungs instead impacted mid-height in the rear hams on the deer and caribou. The red fox was so quick, he was able to flip over on back and track the flight of the arrow while it passed just above his body. Lightning reflexes even though he was completely unaware and looked as relaxed as could be. Modern compound bows send the arrows fast enough that the animals have much less time to react to the bow noise.
Never known a hunter with the goal of poor shot placement. I've known some that overlooked or neglected some pretty basic preparatory steps which later foiled their best efforts. We prepare and then do the best we can with whatever circumstances develop. For better or worse - that's hunting.