Your runon sentences and lack of insight shows a serious lack of education. Concentrate more on school and less on things you cannot control (like another dancer's abilities and advantages) and perhaps you will do well in the world.
You seem to be looking for affirmation that your abilities will somehow beat advantages (although it is so hard to understand you, as your writing is that of a 7 year old, not a teenager) but realistically, you should realize that, among other things, your lack of ability to express yourself is probably the thing that is holding you back the most. Adults put thier time and energy into people who are articulate and can hold a conversation. Your 'rival' probably can speak and write gramatically, and that translates in this world as being smarter, and hence someone who can be 'invested in' easier.