What could be the reason why only my bangs are getting thinner?

My hair isn't particularly thin overall, but the hair specifically at my bangs is becoming weak and thin. It's stressful because my hairline looks sparse every time I look in the mirror. Is there a specific reason why only that particular area is thinning like this?

I'm really worried.
I'm so self-conscious about just my bangs fluttering in the wind.