Trying to fix my bootdisk on my Ubuntu 22.04 laptop

This morning I could not get into my Ubuntu when starting my laptop, it complained about a missing boot drive (iirc)I used a USB drive with Ubuntu live to get access to the system and be able to run Boot Repair

Boot Repair info: https://pastebin.ubuntu.com/p/Q9jcfxcR9G/

I was able to mount my LUKS volume by runningCode:

sudo cryptsetup luksOpen /dev/nvme0n1p3 myvolume

which mounted it toCode:

/media/mint/41843ba2-{long hash here}

I copied out my home folder using rsync to my separate desktop, so that data is back-upped for now. If I can't fix the boot disk I can always install 24.04 and go from there.But I rather restore my system somehow.

What is my next step to possible restore my system?

Btw, a while back I switched to Liquorix Kernel (6.8.7-2-liquorix-amd64 I think) to solve some graphics driver issues I had.No idea if that plays any role here though, had no complains about it that so far.