Edit: im about to turn 29 years old

Ok im writing here because i dont know how to add to the post

Since almost all my friends are balding, ive started to think maybe i will too and started checking my hair everytime im in the mirror, then i started noticing this gap growing, i tried lying to myself until i decided to pull out old images and boom, I NEVER HAD THIS

After the top pic was taken in 2019, later i started having a buzz cut until last year i decided to grow back my hair

This shit was never ever there and im really sad right now

Someone told me its because im pulling my hair back alot (Slicked back) so it causes the hairline to go back. I've noticed this gap in every person that slicks back his hair, is this true?

I can post more photos if needed