Boot error: Failed to start D-Bus System Message Bus

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maybe post the commands with the output you used for chroot…
also try chrooting using these commands:

sudo cryptsetup -v luksOpen /dev/nvme0n1p2 cryptDrive
sudo mount /dev/nvme0n1p1 /mnt/boot/efi
sudo mount /dev/mapper/cryptDrive /mnt
sudo manjaro-chroot /mnt

any errors? if not, run:
mkinitcpio -P && update-grub
any errors?