How to get better at interviews 🤦🏼‍♀️

Just had another 2 rejections today , over the last 18 months I have applied for 7 Jobs all unsuccessful, my trac makes me want to cry looking at it . It’s fairly obviously me , I prepare for hours i read up I try and use STAR and to know the area I’m interviewing look as smart as I can , I don’t just roll up and hope for the best but apparently I’m still not appoint-able . When I ask for feedback it’s always the other candidate knew more , I didn’t have enough depth to my answers . I can’t handle the rejections any more and feel absolutely dejected and useless tonight . Is there some form of coaching for interviews you can get particularly aimed at nursing ? I’m obviously meeting the person specs as I’m getting interviews I just can’t seem to do a good one .