My wife lived in Manhattan for decades, and she had to have a car for her work, so she had loads of practice parallel parking. Bystanders used to applaud when she shoehorned into an impossibly small slot. She was even recruited by others to parallel park their cars. She's always goading me to squeeze into what I think are too small spaces. I've renewed my skills ... a little. Our medium sized city is fairly suburban, with plenty of free parking most places, so it is not a skill I use often. Practice is everything.
The old joke: A tourist asks a New Yorker how to get to Carnegie Hall, and the New Yorker responds, "Practice, practice, practice."