I'm good with all kinds of animé and manga really, as long as the plot is good. I don't think age has anything to do with it, it's just your personal preference. Most manga and animé have some sort of mature content so there really isn't anything toi can do about it but adapt! Just find something toi like and ignore the parts toi don't like, it's called imagination. :)
Here is a site full of suggestions so go pick one that toi might like and try it out. If toi don't enjoy it then continue searching until toi find one toi do!
link