“Can I ask what my weaknesses are”
The main “weakness” is that the large majority of applicants have a GPA which is very similar to yours, and also like you have very strong extracurricular activities. It is difficult for any student to get into these schools unless they have some significant “hook”.
Some examples of hooks: At most of these schools some of the spots for incoming freshmen are taken up by athletes. Most of these schools give preference to children with a parent who is an alumni (with an alumni parent who is a significant financial donor being even better). URM students also have an advantage in admissions.
This leaves fewer spots with a lot of very highly qualified applicants. As one example, a number of years ago Stanford included an article on admissions in the magazine that they send to alumni. It mentioned that they felt that 80% of their applicants are academically qualified to attend.
What of course this means is that you do not have a weakness at all (other than the math ACT score). You are a very strong candidate. However, so are most of the other applicants.