are flat butts genetic?

I'm 15 and I've been working my glutes out for a year and this is all I have. I have really wide hips so that emphasizes the flatness. My mom's butt is even flatter than mine and she also has wide hips. Is it genetic? I'm getting really frustrated and I just feel like crying rn because nothing I'm doing is working. I eat right, I use weights, I make sure my glutes are activated. No matter what I do it's not getting rounder. It has gotten a tiny bit bigger but the shape is still the same if that makes sense. But I don't want it bigger I just want it rounder. Is there anything I can do or am I stuck with an ugly butt forever?