What are you using to create the bootable installer? Rufus may have options to help with this.

Also, MX includes a bunch of system rescue tools. If grub-install doesn’t work by itself, maybe chroot would help?

The MX community forums might be a good place to ask, too. Lots of power users there.

I am confused. What is this a photo of? I mean, why do I see icons on the left if you are unable to install and boot to login screen?