Some other contributors suggest I use a live usb, not installing the OS but using the live usb with working wlan to complete the installation, but this seems to be more complicated than working directly from initramfs.
My suggestion was to use live usb to find your /home files. Indeed using live usb and then using chroot to complete the upgrade from 23.10 to 24.04 is maybe more difficult (As /dev and /proc and /sys need to get mounted with the chroot). If I were you I would first find your /home files and make a backup and after that proceed with upgrading.