Welcome to SoM lunar122! I hope you enjoy your time here! Also, about your element problem, I believe that we never chose our elements, our higher self does before we even happen upon this physical plane, that being said, I also don't believe that our astrological sign dictates our element. Your element is a reflection of who you are spiritually. Therefore, to say that "These amount of people born between these times are this way and have this as their element" seems propostereous to me.
So in my belief, you do not choose your element, your higher self does - a decision of which you have no control over. And, Your astrological sign does not dictate that either.
What you choose to believe is up to you. Whether it is dictated by Astrological Sign or The one you are most spiritually connected to.