It’s normal if you can’t feel obvious baby movements yet because there are still ample space in your uterus, but you should be able to feel some bubble popping and that’s baby movements as well. Obvious baby movements will be around nearer to trimester 3 when space is much more limited.
It’s not a concern no worries. I heard some may only start feeling week 23-25. Your placenta position also affects too, whether you can feel earlier or later.