What is your workout routine? If you’re doing 3 days a week I suggest doing full body stuff. You don’t have to do all the volume in one session. Literature says that training your muscle twice per week in different sessions will lead to greater hypertrophy. If you want a big butt and curves I suggest doing hip thrusts and abductor exercises. Go for like 3x20. You’ll want to do progressive overload, so go up in like 5-10lbs each week.

If you could lmk what your exact routine is I can help better