Front squat advice please

Set 5/5 at 80kg. Just based on how uncomfortable I find it, front squat is my worst lift by far and I've never trained it properly, but that needs to change. Whilst I'm reasonably happy with my form and depth, I'd appreciate any tips, particularly on improving my rack position. I use crossed arms at I have shit wrist mobility and have no aspirations to do Olympic style lifting. Thanks in advance.