the two last points given by Ebbie and Lucy are what worked for me eventually
it really does take time and then eventually it clicks.
It just kind of happens is probably the worst but most accurate advice you are going to get.
one day you'll just be able to do it. And then out of nowhere you'll have a shocker of a landing just to keep you on your toes
I had a real tough time with this as well. all of the above advice works to some degree.
by biggest problem is carrying too much speed onto final , then you are guaranteed to bounce. Once I figured this out and concentrated on nailing that magic number things got a lot easier