Not sure what to do with my life

I'm 18f living in Puerto Rico which I'm not fond of, in the process of enlisting in the Air Force because I don't know what else to do with my life, I took the ASVAB and failed it and will be retaking another one next week. I want to join because of the benefits and because I want to be set for my future+ I want a change to my life, but I'm not sure if I'm really set on my decision of joining. My only other resort would be moving back to my home state Florida and moving in with my mom and little sister and finding a job and eventually saving up enough to rent my own place, I don't mind that idea since I enjoy Florida way more then Puerto Rico and feel more like myself over there then I do here. I really need advice on what to do