A lot of men don't really have much have on their testicles. Others do. No big deal. People are different. You don't sound abnormal so far. Maybe you'll get more hair, maybe not.
You'll probably start ejaculating soon. It is not uncommon to not ejaculate at your age.
How do you know you do not have pre-ejaculate if you do not know what it is?

Pre-ejaculate is a drop of semen that comes out before the man ejaculates. Sometimes it's such a little bit that the man does not notice it.
Don't worry, you sound perfectly normal so far. You'll probably start ejaculating and having pre-ejaculate before too long.