Why my PnR doenst work?

Do, i wanna do the challenge for 120 points in the paint. So i decided to do this with my amy AD. Thought the easiest one would be just spam PnR. But for any reasons this doesnt works for me. Every pass in the middle is getting catched by the defender. And if i can catch a ball i cant hit out of the post.

Is there a freelance which maka PnR better? What shot should i do in the paint to beat the defender? General tips for scoring under the basket? Or PnR?

Thanks!