Why is it all in vain? If you can show that you will return home after (and obviously, that you can pay for the course) you’ll be fine. If the factors that led to your brother’s claim were applicable to you it might cast doubt over you, but you say his claims are not relevant to you.nope.
It's been a long way to this enrollment. and seems all in vain
FI student visa applications do not ask about family situations.
Thanks for the reply. I have partial scholarship from the university and remaining part of the fees - from another sponsor. I'm not sure how credible it seems, or what kind of arguments I should provide to pursue US visa officers in my honesty..... will they trust me?