I kinda hate my best friend
What is the point of hating your best friend? Seems silly!
Hmm, let me tell you something. I also can be a bit stupid sometimes.
It's good to have a best friend, and you really should appreciate them. They might do things that you don't like sometimes, but overall, they are your best friend for a reason.
She was not a friend like I thought.
It sounds like something bad happened between your friend and yourself. But, there's a reason you've both been friends for long enough to be best friends and an attempt to keep close with them may be important to your mental health.