The University of Texas is a state-funded public university.
Where did you get the idea that they would fully fund your education?
Your major is Computer Science which is very competitive but appears to be the choice for many of the international students applying to the US.
It will be a tough go, so the suggestions to search in your home country for your education make sense if you can’t pay for an American education.
Unfortunately, international students often believe that funding is limitless for US schools. It is not. Scholarships are very limited.
Also, your list of in-house school awards looks like you are stretching to pad your resume. Every school has school awards-it’s called being on the honor roll. Being the top student is called being a valedictorian after 4 years of high school, and there are about 35K of those students in the US. Stating that you were a “participant”, says you were there.