I need help with my hair?

Since I was in 5th grade I started scrunching my hair with gel,mousse and hairspray. I also staightened it without a heat protectant and curled it. I now have a little bit of hair and its really thin. My mom said that since I was little I was born with a little bit of hair. Im scared that I go bald I want to stop, but if I dont do my hair like this I feel ugly and I dont like how side pony tails look on me. Any hairstyle tips? Also, anything I can do to get more hair?