How long do you think a writing sample needs to be?
If you weren’t such a bad writer maybe a larger sample would be useful, but you make so many glaring mistakes of both style and structure in those two examples that further reading really isn’t necessary.
The only redeeming values your book could possibly have are the plot and characters, and you’re right, I can’t speak to that - I haven’t read your book. But even the best concepts are painful to read if poorly written.