Waist twisting is not the same as hip twisting. You need to find a feeling of reverse twist, just like you twist a towel, it won't be reversed. I'm not sure what you mean by twisting your waist and hips, so it's hard to explain. Basically, if it is a direct hip movement, it is necessary to alternately consider the knee and look at the waist movement. Focus on your waist. Don't think about crotch movement. Relax and take your time. Practice more.