Ramadan: I'm having an urge to do haram for some reason?

I've noticed recently I've been having strong urges to do haram things. Like I want to go out and be with my friends even though I know they're always with girls and smoking. My lifes been pretty rough recently. I'm not going to talk about all that, but I've been really worrying about my future. I'm in college, live alone, and don't know what to do with myself. I feel like smoking bc I hear it will help me be less worried and help me focus. Just that feeling that a cigarett will calm me down really makes me want to smoke. And girls, I'm almost old enough to get married. I know datings haram but there's no other way I'll get married, trust me. I know Muslim girls don't date, but I can marry a Christian or Jew right? I don't know, I really feel like doing something to change my life, and now. Your thoughts?