The most difficult thing is to introduce yourself

I am a college student from Harbin Institute of Technology, China. I do not think introducing oneself is an easy thing. How am I able to could I make you know about the a true me through a few some simple sample words? (or "How can I tell you about my true self in just a few simple words?") (I think you mean "simple" not "sample".) Yeah, I like playing basketball, I can play the piano and I am working hard in my studies studying. You may think I am me perfect, but that is not true. I put on Show my best performance in front of strangers to do make me more attractive (or "seem perfect?"). Can I say that? (No, your original sentence is unclear.) But as time goes by, more and more of my and disadvantages (or "imperfections"/"weaknesses") come along more are revealed. I must confess, I have lots of weaknesses disadvantages. I am a little lazy, and I like playing computer games (all the time?). Sometimes I cannot manage arrange my time well, (or "I am bad with time management") and sometimes I am indecisive hesitated. That is the about a true (or "real") me.
I want to make friends with you, no matter what country you are come from. It is better if your first language is English. I can teach you Chinese if you are interested in it. If you are interested in Chinese culture, that is good too. I want to study abroad and I want to improve my English. I want to get your help. sincerely.

Best wishes!