i think the fact that many of you are asking questions about your religion is a great thing, better than just blindly accepting a faith or its teachings. Regardless of which religion you choose to follow (if any) youll always have doubts. The muslim community tends to have figures that portray themselves as perfect, and us being muslims teens tend to feel as if we are 'bad' muslims in comparison to them when in reality we know nothing about there private lives, or there intentions.
I think its best to just do your own thing, i believe in one god and his final messenger.. That makes me muslim, have i had days, or even weeks where i forget prayer and question my belief? Yes but each time my imaan grows as a result. I wish you guys all the best with exams and all the good stuff