So many times when I am reviewing what I got wrong, I look back at the question and I'm like why the hell did I choose that question. Why does this keep happening.

Also, most times I end up choosing the second best answer and how can I fix this.

I took the September LSAT and got a 154. Then I got a 150 on the October LSAT. Should i cancel the October LSAT score? Please let me know because I am super conflicted.