Okay, I've been there, done that although it was a while ago in 1994. Got hosed by what passed for DEI back in the day but that's another story.
So, got hosed as the A-10 Division Chief of Stan/Eval for the Wing and my AF career is pretty much over. Not much I can do to fix that. "Should I stay or should I go now..." was an appropriate song lyric and I chose to go. However, I wasn't prepared to go with no airline apps but airlines weren't hiring, no Guard/Reserve contacts, nothing. So, I had to get those done before I cut the income lifeline and I ended up sticking around for about a year and a half before I separated from Active Duty and left with a $52K separation bonus.
Got a GS-13 job as an IP at Barksdale but I was looking at the job as a place holder until I could get hired at an airline. I did get promoted to Major. After 2 years, I got hired by American so I switched to the traditional Reservist role. Somewhere in there I hung up the G-suit and got a staff job at 10AF. Got promoted to Lt. Col. I retired with 28 years total service although I wanted to retire earlier but 9/11, a faux bankruptcy, age 65 retirement, and a real bankruptcy made me not want to give up that lifeline until I had to. I'm currently paying back the $52K.
As much as getting passed over was a huge insult, I think I'm better off for it. I wasn't worried about the next promotion, I wasn't worried about the next school, and I wasn't worried about the next job. I flew T-38s and A-10s for 21 years. I got into a more lucrative career and approaching my airline retirement, I have financial stability I'd never thought I'd see. That $52K that I'm paying back was basically a 30 year interest free loan for a house now approaching $1M in value. The military retirement also includes medical which helps.
So, you have skills that are marketable and there are companies out there that value them. Even after getting hosed for promotion, I did do Air War College, I did an Electronic Warfare School and a few other odds and ends. Making yourself more valuable is always a good idea and don't burn bridges that you might need to cross back over. Your life isn't over but it is going down a different path than planned. Best of luck to you!