Ask HN: I have 10 yrs of Exp. Failed 4 takehome projects. What am I doing wrong?

I'm actually a super senior/staff engineer with roughly a decade of experience. This current interview run has been demoralizing because I literally put a lot of effort into 4 different take home assignments and all 4 came back as failures with zero feedback given. I'm at a complete loss for what I'm doing wrong. I initially went in with a lot of confidence but I'm getting totally shut down on every submission.

Here's an example of a recent one:

https://github.com/anonanonme/takehome-sample

takehome instructions: https://github.com/anonanonme/takehome-sample/blob/master/README.md

takehome readme: https://github.com/anonanonme/takehome-sample/blob/master/documentation.md

Can anyone provide some legit criticism? Or is the person evaluating this just being unreasonable?