You got some anatomy problems, so I duked out this
that lays out the sections of the torso and how they look like. I took me a loonng fucking time to figure this out due to all the other "How to draw bodies" being super complicated. But yeah just watch for those sections of the body.
What makes a butt isn't 2 circles, it is actually 3 sections of the body that forms it.
The red portion (the stomach area),
the orange (the actual butt)
and the yellow portion (the thighs that go all the way to the top of the hips that actually is the one that forms most of the roundness).
I hope this hepls my man.