You ever bombed a job interview?

You ever bombed a job interview? Ever have an employer contact you about a prospective job offer and then go into the interview and stammering all over the place? This has happened twice this year and I've gotten ghosted both times. I hate this. I'm not making a lot of money and one of those jobs could've been life changing and now I'm stuck where I am. This is hopeless. Rant over.