2 FAA check fails.
1 141 stage fail.
Still hired by a 135 carrier and a 121 carrier.
The key is to establish a clear separation between "training hiccups" and your continued excellence as a professional pilot. Basically never fail ever again. Stressful but doable.
Get in with a 135 carrier and stay there until you've had plenty of 6 month check rides - establish a new track record of check-passes. This is you best hope.
Good luck.