Puppy doesn’t care about dogs

I have a bernese puppy 14 weeks, we go out everyday and i make sure he sees birds/people/cars etc. We not so often see dogs and he just looks at them and doesn't care at all. Sometimes he reaches for people that walk close but never dogs. He's not playing or interacting with them even if they're in his face😭 I just wanna know if it's because he's young or it's just part of him