Chances of you balding at 13 are so low. From the photos you posted it is clear you have no balding or thinning.
It is NORMAL to have a un-even hairline and for it to be slightly less dense in the corners of your hairline.
You do not have traction alopecia. People who get that usually are girls who wear their hair super tight, guys who wear helmets extremely tight and that’s over a very long period of time. Combing your hair when it’s wet would have pretty much no effect on you.
You must listen to this, you have no hairloss and it is indeed something that is inside your mind.
What you need to now take note of is how you are feeling due to a worry of losing your hair. It is not rational to want to kill yourself over losing your hair, even if you were. I recommend you see a doctor to talk to about how you’re feeling. Being 13 your mind is going through huge changes and this includes worrying about things. Please take care of yourself and remember to enjoy your life.