LXD is starting to exhaust my patience, After erasing LXD/snap completely and trying to do reinstall I get the infamous lxc list Error: Get http://unix.socket/1.0: dial unix /var/lib/lxd/unix.socket: connect: no such file or directory

apt remove --purge lxd-client

You still have the deb client installed which based on system PATH takes precedence over the snap.