You have two different problems:
- Is a known error: https://forum.endeavouros.com/t/issue-with-dracut-107-and-the-lts-kernel-causing-failed-to-mount-sysroot/71232
You can fix this withsudo pacman -Syuu
This will downgradedracutto Version 106. - You have to configure your
systemd-bootto use the kernel-entry you want to use. Therefore change thedefault-line in the file/efi/loader/loader.conf.
After that run the commandreinstall-kernels.
More infos see: https://discovery.endeavouros.com/installation/systemd-boot/2022/12/
Hope it helps!