Use fstab to mount luks encrypted drive to subfolder within home

Fresh install of Lubuntu 20.04 on system with Windows 10 and Lubuntu installed on 256GB NVME drive to dual boot. Boot drive is /dev/nvme0n1p2 Home folder is therefore /dev/nvme0n1p2/home/username I have a 1TB HDD with two partitions: /dev/sda1 736GB encrypted ext4/LUKS /dev/sda2 195GB ntfs For context, the purpose of the ntfs partition is so that I can easily share files between my Lubuntu environment and Windows 10. My objective is to be able to: 1) Boot into Lubuntu 2) Log in 3) Open File Manager and navigate to /home/Filestore 4) Be prompted to enter password I have read this guide: https://www.linuxbabe.com/desktop-linux/how-to-automount-file-systems-on-linux And I can successfully automount the ntfs drive to /home/WindowsShare But I cannot mount the LUKS filesystem to /home/Filestore Using 'ext4' as the filesystem gives me this error message:

mount: /home/luke/Filestore: wrong fs type, bad option, bad superblock on /dev/sda1, missing codepage or helper program, or other error.

The entry for the partition in blkid is:

/dev/sda1: UUID="redacted" TYPE="crypto_LUKS" PARTUUID="redacted"

So I therefore tried using "crypto_LUKS" as the filesystem in fstab and got this:

mount: /home/luke/Filestore: unknown filesystem type 'crypto_LUKS'.

I have looked for guides on automounting encrypted filesystems and found numerous. Here is one: https://blog.tinned-software.net/automount-a-luks-encrypted-volume-on-system-start/ Everything I have found involves using a shared key to auto-decrypt the filesystem on boot. I don't want to do this as I don't have an encrypted area on my boot drive in order to store the key. Is my stated aim possible?