I'm also a recent Course 6 grad ('24), and I want you to know you aren't the only one feeling this way and going through the same process. I have fortunately been lucky with the hiring process but have seen the real brutality of it through my friends. You aren't a failure and a job/money isn't what defines one.
I know you are just venting, but please feel free to reach out to me. I'm happy to chat, share what I'm seeing, or ping a few friends I know who might be looking for engineers.