Rising junior trying to raise ACT score

My first thought is that you are repeatedly making the same types of mistakes over and over again. You don’t know what you are doing wrong, over and over. I know you don’t want a tutor, but maybe just a couple of sessions will help make a difference. A tutor can help you see where you are going wrong.

I suggest you look at this thread:

A LOT of a student’s test score is that a kid simply isn’t utilizing basic test skills.

I suggest you adjust your expectations for your eventual score. It’s going to be very difficult to raise all the other sub scores by enough points to give you a composite of 34. Also, spend time brushing up on your punctuation skills.