There are a lot of kernel settings which can be passed to the command line to make a system more secure. [Madaidans-insecurities page](https://madaidans-insecurities.github.io/guides/linux-hardening.html#kernel) describes each of their function and how they improve security of the system so lets add them to `/etc/kernel-hooks/secureboot.conf`:
After reconfiguring `kernel-hooks` try to reboot and it should boot. Although there are more options that might make the system more secure, these come with a big performance hit most of the time so these settings should do for now.