$ snap version
snap    2.49.2+20.04
snapd   unavailable
series  -

$ sudo apt-get update 
$ sudo apt-get install -yqq daemonize dbus-user-session fontconfig
$ sudo daemonize /usr/bin/unshare --fork --pid --mount-proc /lib/systemd/systemd --system-unit=basic.target
$ exec sudo nsenter -t $(pidof systemd) -a su - $LOGNAME

$ snap version
snap    2.51.3
snapd   2.51.3
series  16
ubuntu  20.04
kernel  5.10.16.3-microsoft-standard-WSL2

$ nano ~/.bashrc

if [ -z "$(pidof systemd)" ]; then
    sudo daemonize /usr/bin/unshare --fork --pid --mount-proc /lib/systemd/systemd --system-unit=basic.target
fi;

alias ssnap="exec sudo nsenter -t $(pidof -s systemd) -a su - $LOGNAME"

$ ssnap