@calaber24p I am twice your age friend, And I am by no means a good looking guy! I started losing my hair at 23, what's left is getting grey, i'm on the fat side, I look like a gorilla but I have a beautiful wife who loves me for who I am, not my physical appearance. My point is, beauty or good looks don't last, inner beauty is immutable . But inner beauty can be covered up by self doubt, just let it shine thru!
I had the same feelings when I was your age, it goes away when you stop being concerned about what other's see on the outside, and let the see the true self. If I can do it, you can too!