Gfilui

For a while my Ubuntu hasn't been booting anymore as it tells me to update the microcode. I've asked about it here but wasn't able to resolve it. I had my hard drive encrypted so I've decided to focus on just saving the data I have on there. This means I am trying to access a luks-encrypted partition using a live usb and running into a lot of problem.

1. when I open GParted to look at the partition it tells me

The driver descriptor says the physical block size is 2048 bytes, but
Linux says it is 512 bytes.

so far, I have followed most instructions on this thread

sudo cryptsetup luksOpen /dev/sda3 myvolume
Enter passphrase for /dev/sda3: 
ubuntu@ubuntu:~$ sudo mkdir /media/my_device
ubuntu@ubuntu:~$ sudo mount /dev/mapper/myvolume /media/my_device
mount: unknown filesystem type 'LVM2_member'
ubuntu@ubuntu:~$ sudo lvscan
 ACTIVE '/dev/ubuntu-vg1/root' [229.59 GiB] inherit
 ACTIVE '/dev/ubuntu-vg1/swap_1' [7.89 GiB] inherit
ubuntu@ubuntu:~$ sudo vgchange -ay
 2 logical volume(s) in volume group "ubuntu-vg1" now active
ubuntu@ubuntu:~$ sudo mount /dev/mapper/myvolume /media/my_device
mount: unknown filesystem type 'LVM2_member'
ubuntu@ubuntu:~$ sudo udisksctl mount -b /dev/mapper/ubuntu--vg1-root
Error mounting /dev/dm-1: GDBus.Error:org.freedesktop.UDisks2.Error.Failed: Error mounting /dev/dm-1 at /media/root/6f80dde8-85e9-4e1d-b3be-ea0a9d44f5f1: Command-line `mount -t "ext4" -o "uhelper=udisks2,nodev,nosuid" "/dev/dm-1" "/media/root/6f80dde8-85e9-4e1d-b3be-ea0a9d44f5f1"' exited with non-zero exit status 32: mount: wrong fs type, bad option, bad superblock on /dev/mapper/ubuntu--vg1-root,
 missing codepage or helper program, or other error

 In some cases useful info is found in syslog - try
 dmesg | tail or so.

dmesg | tail gives me:

[ 56.866350] wlp2s0: authenticate with cc:ce:1e:d7:2e:9b [

56.872017] wlp2s0: send auth to cc:ce:1e:d7:2e:9b (try 1/3) [ 56.877483] wlp2s0: authenticated [ 56.881185] wlp2s0: associate with cc:ce:1e:d7:2e:9b (try 1/3) [ 56.886601] wlp2s0: RX AssocResp from
cc:ce:1e:d7:2e:9b (capab=0x431 status=0 aid=2) [ 56.889418] wlp2s0:
associated [ 56.889452] IPv6: ADDRCONF(NETDEV_CHANGE): wlp2s0: link
becomes ready [ 151.963132] NET: Registered protocol family 38 [
748.825568] JBD2: journal file too short [ 748.825570] EXT4-fs (dm-1): error loading journal

I have also tried this with no success:

ubuntu@ubuntu:~$ udisksctl unlock -b /dev/sda3
Passphrase: 
Unlocked /dev/sda3 as /dev/dm-0.
ubuntu@ubuntu:~$ udisksctl mount -b /dev/dm-0
Object /org/freedesktop/UDisks2/block_devices/dm_2d0 is not a mountable filesystem.

Any advice on how to proceed? What would be the best next step to resolve this?