Is it normal that i can't find a girlfriend because of my height?

According to the US Center for Disease control, only about 5% of women are 5'7 or taller? Where are you living that the number could possibly be anywhere near that high? Even if you meant 75% figuratively as in a lot or most, I would still find that hard to believe. If it is true, maybe you should move.

"literally 75% of girls around are taller than me."

According to this document (<a href="https://www.census.gov/compendia/statab/2012/tables/12s0209.pdf" rel="nofollow">https://www.census.gov/compendia/statab/2012/ta...</a>) from the U.S census bureau, 82.3% of American women aged 20-29 are 5'7" or below, and 84.9% of American women aged 30-39 are 5'7" or below.

In fact, you're taller than more than 75% of girls around.

Aw that's silly. I'm 5'6" and I have a huge crush on a guy who is an inch or so shorter than me. If a woman won't date you because she thinks you're too short, she's a bitch. I understand people have preferences but they can easily be overlooked if the rest of the package is of great quality.

I like short guys.

It's probably not your height.

Maybe they're all just hiding on the top shelves?
Get a ladder.

You could always suck cocks!

Excuses. Excuses. The average woman is 5'4". Also, most women would not turn down a really awesome guy who was short er than them. Try to become really awesome.

I know loads of short arses who have girlfriends.

You can tell us it's about height, but we both know that's not it.
If you don't get truthful with yourself, then you may be doomed to a lonely life.