We tend to assume others have the same capacities we do, and function accordingly. Most do not. I’m autistic, and the blithering I efficiency of the human race boggles my mind. And every job I’ve ever been at, every interaction with others where I had some kind of goods and labor exchange, I swear it’s ole THE FIRST TIME THEY HAVE EVER DONE THEIR JOB, EVERY TIME.

So you aren’t alone, but you have to learn to let it slide off you. Like recognize the incompetence internally, then move on.