First of all, you accomplished a lot during high school. Those accomplishments remain, no matter where you attend college.
My advice is that admissions to college or to grad school are not a “prize” for good grades and accomplishments. The college decides whether to accept you based on the profile you present. They like accepting students with high grades, since those are the type of students that are more likely to succeed.
The problem is that, unfortunately, accomplishments do NOT speak for themselves. You need to present them in the best way, and if you did not do so, you run the risk that you will not seem as good as you are. A bad essay can also mess your chances. an application which is not targeted to the colleges to which you are applying can also mess up your chances. Not every college, but those colleges on your list really like seeing applications which were written with them in mind
As to why you weren’t accepted. Every one of those colleges you mentioned reject over 90% of their applicants. There were likely at least three times as many students with your stats and accomplishments as they accepted. Your list of colleges all have acceptance rates of below 10%. If you applied RD, the chances are even lower.
You are an excellent applicant, but you are competing with far more exceptional applicants than these colleges can accept.
Your religion did not affect your acceptances (or lack thereof), and your low income just affected your chances because you likely did not get the same level of guidance in preparing your application as a wealthy kid would get.
I will ask the same question that @vhsdad did - didn’t you apply to any matches, i.e., colleges which are more selective than your state school but not as selective as the list of high reaches you had?
I know that there are many very good colleges which would not only accept you, but would offer you lots of money to attend there. Places like U Arizona, UNM, Alabama, etc. You would likely get good offers from U Minnesota, U Iowa, Missouri, etc.
I think that your main mistake was not applying strategically. However, it is far too early to consider strategies for applying to grad schools, since you are not yet sure what you want to do in grad school, if anything.
In the meantime, do your best to shine in undergrad, do internships, work with professors, interact with the rest of the top 25% of the students. When you are looking to apply to grad school, avail yourself of the resources that your college provides, speak with professors and grad students, etc.
Remember, you can also transfer to another college, if you are not happy where you are.
Good luck!