I still don't know why I can't play barre chords.

I don't know how I'm doing barre chords wrong.

I've tried absolutely everything in my power. Thumb positioning, pull in my elbow, tilt and curve my index, don't push so hard, just be patient, everything. I still can't do it.

I know I will get there eventually, but every time I try, I end up sobbing in a ball. I know that sounds like I'm an absolute crybaby, but it's so frustrating! I just don't understand what I'm doing wrong. I've given it my all, I really have, and the idea of giving up enrages me, so I'll keep trying, but I just don't know where to go from here.