Is God fair? And is Christianity actually real?

I am 15, all my life , i have been way below average height,making it difficult for me to be athletic. To balance my shortness out, i work hard everyday to be athletic but I'm still nothing when it comes to competitions(track and soccer) because everybody is at least a head taller than me and bigger than me, so even though I'm really strong,endurant, fast, and muscular, I STILL HAVE NO CHANCE against people normal height. My parents say I'm smart, but they'll say anything, even if it is true, then my life is still on a negative brink... And to top that off, i have lots of acne, and I had it for 3 years already making it really hard to be social with others, i eat super healthy and get lots of sleep, and now even take antibiotics against acne as my doctor prescribed, but SOMEHOW my acne is still getting worse. I'm really short, and i have lots of acne, and i was raised Catholic, so my mom tells me God loves everyone and he is very fair. How come my life is nowhere close to fair? Oh yeah, and i pray everyday and ask God to grow at least 3 inches more, and for my acne to go away. I've been praying all my life, and still, people who don't even go to church or anything, havea way better life than me, athletic-wise and social-wise. How is any of this fair?