If it was easy everyone would be doing it.
First rule of flight club is relax. If you're anxious you will tense up and that makes it more difficult.
The movements and corrections need to be intuitive, overthinking it or trying to manufacture a landing will not help.
At 20 hours you're not supposed to be a rock star. Take your time, don't rush the machine.
Everyone has a different aptitude and way of understanding. It's important your instructor finds a way to help you understand how to improve. If you're not connecting it may be time to spend a couple of hours with someone else.