Sometimes expectations don't match reality.
When I was in elementary school, I watched all sorts of high school movies and tv shows and thought I was going to be 6 ft tall, good looking, and have all sorts of girlfriends when I was in high school. It didn't help that my mom, with her flawed logic, believed that boys take after their maternal grandpa's height and since my grandpa was 6 ft tall, that means I would be that tall too. In fact, she was so certain, that she bet my sister $100 I would reach that height by 17 years old.
Of course that never happened. In high school, I was quite short, underweight, and autistic. I was so short that my mom took me to an endocrinologist in 9th grade, only to discover that my growth plates had already closed prematurely, therefore stunting my growth at an earlier age than normal. So much for being a good basketball player... As a result of being short and on the spectrum, I didn't date at all as a teenager. I wanted to, but that wasn't really a realistic option.
College wasn't much better either. I came of age during the "tinder era" and went on Tinder only be ghosted, left on read, and rejected every single time. I talked to girls in my classes, the clubs I joined, but nobody ever seemed to be interested either. And why would they? As a 21 year old man, I had absolutely nothing going for me from a dating market standpoint. I didn't have the good looks, didn't have the personality, I wasn't rich, etc...
It got better as I got older but for the first 25 years of my life, I received zero attention from women. Zero...
Like I said, expectations don't always match reality.