I think it is pretty easy to say that our culture is mostly corrupt, and that "kids these days" are even less moral than ever in history. But isn't that what adults have said throughout history?
It sounds to me like you are frustrated with your peers who seem to be interested mainly in shallow things. This is natural. This is, like it or not, pretty typical of average teenagers. Here is one thing I believe whole-heartedly, when it comes to faith, talk of the "afterlife" or purpose on Earth: every human will come to a point in life (probably more than once) where they will truly wonder what everything means. Every human will also experience a crisis-point (possibly more than one) where nothing human will seem big enough to help.
These are the moments, for me, when the opportunity to share my beliefs are easiest. It sounds like you are a believer in something. I encourage you to spend this time in your life building authentic relationships with your peers, so that one day, when the crisis-point happens, you won't be a stranger when you wish to present an option based on your beliefs.