I was not surprised when I found out I failed
Why were you not surprised you failed? Did you not prepare?
I will find all the flaws in my study prep, review them, and do better next time.
Failure can be expected if your study habits aren't good. Analyzing how to improve your habits can be a helpful way to do better on tests.
Studying is for nerds so I guess I'm a nerd now.
There is nothing wrong with studying and preparing for your tests. The more you study, the better your test results will be and then you'll want to keep improving to keep those grades.