Chance me for top 20-50 schools

Hi I’m a Texas resident and US citizen living in a foreign country. I take the British curriculum

In my 10th year I had received 4 A* 5 A and 1 C (IGCSE)

Now I’m my 10th year I was forced to move here without my parents and attend a school 3 months after the school year had started.

Henceforth my grades took a turn and I ended up with straight Bs for my 11th year

I’m about to start senior year and am confident that I can get my grades up to A and A* however I’m worries my chances at top 20-50 schools are now dead in their tracks

My ECAs are good with a large amount of community service and hosting a large event at my school as well as doing a what I consider a project that is very beneficial to the community. I also have played a musical instrument for 7+ years

Please chance me for top schools

Specifically Washingtom at St Louis (first choice)
UT - Austin
University of Virginia and any others that fall into this bracket

Thanks

Even you are a Texas resident, by not attending a high school in Texas would be a disadvantage for you as you may not participatebin the auto admission.