Not the specific thing, of course. Just something along the same lines as this.
When I was in grammar school (1950’s) I saw the Alan Ladd movie The Iron Mistress which was ostensibly about Jim Bowie and the invention of the Bowie knife. I was fascinated beyond the momentary thrill of the beauty of the knife itself and beyond the skill it took to throw it so well. I guess I still have a soft spot for that movie although it was much more a 50’s movie than one that would hold up today, but I digress.
Not too long after that there was an ad in a magazine for a “Malayan Throwing Dagger” that was “guaranteed to stick every time” and it was only $2.95 (or so) so I ordered one and was as impatient for its arrival as I have ever been for anything (although I still have the same impatience for anything I order and don’t get right away).
Since it was “guaranteed to stick every time” I began to throw stuff (sticks, rocks, other stuff) at things like trees and walls and doors and whatever so that when the knife got there I’d be able to stick it in anything in sight. It was an ongoing thing of trying to hit little things like skinny trees from goodly distances.
When the knife arrived it had some decent instructions on how to throw a knife, but it was immediately obvious that it was NOT going to stick every time! In fact it was painfully obvious that unless I held it just so and stood at precisely the right distance and kept my arm motion just so, and on and on with details, I wasn’t going to stick it up at all. I spent the next 5-10 years getting good enough with it (and other similar throwing knives) to stick it up 90% of the time inside 15 feet from a target.
Way past false advertising, for sure.
But the point of this OP is: have you ever been so utterly disappointed with the difference between your expectations of what you can do and what you actually can do?
FWIW, I have similar disappointments with music, poetry, chess, and enough other things that I think it’s simply overestimating my own skills and/or desires.