Undercover
Kunce in training
Continuing to squat poorly will only make things worse.
I always hate how people ask these things without posting a video lol.
Could be many things - weak abs, not activation abs, weak hips, not activating hips, poor thoracic mobility, poor hip mobility, trying to squat too deep. I'd be willing to bet it is one of these but without seeing your squat it is hard to tell which, and then obviously how to go about correcting it
Fair point, as said I'll be making a video to help demonstrate. But as you highlighted I believe it's a hip issue mainly. I think I'm over breaking at the hips and leading into a awkward bottom position, which rounds my lower back (not enough break from the knees).