我删除了我的 GUI 并尝试了很多次来修复它，但是当我想要修复依赖关系时我收到了很多错误。请帮助我一步一步地修复这个问题：
apt install ubuntu-desktop
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the sltuation:
The following packages have unmet dependencies:
gdm8 : Depends: gnome-shell (>= 3.19.92) but it is not installable
gir1.2-snapd-1 : Depends: libsnapd-glibl (= 1.58-0ubuntu0.20.04.0) but 1.60-0ubuntu1 is to be installed
gjs : Depends: libgjsog (>= 1.63.90) but it is not installable
gnome-session-bin : Depends: dbus-x11
gnome-settings-daemon : Depends: gnome-settings-daemon-common (= 3.36.1-0ubuntu1.1) but 42.1-1ubuntu2.2 is to be installed
gnome-shell-extension-appindicator : Depends: gnome-shell (>= 3.33) but it is not installable
Depends: gnome-shell (< 3.37) but it is not installable
gnome-shell-extension-desktop-icons : Depends: gnome-shell (>= 3.33) but it is not installable
gnome-shell-extension-ubuntu-dock : Depends: gnome-shell (< 3.37) but it is not installable
Depends: gnome-shell (>= 3.35.90) but it is not installable
language-selector-gnome : Depends: language-selector-common (= 0.204.2) but 0.219.1 is to be installed
libcairo-gobject-perl : Depends: perlapi-5.30.0
Depends: libcairo-perl but it is not going to be installed
libglib-perl : Depends: perlapi-5.30.0
libgtk3-per1 : Depends: libglib-object-introspection-perl (>= 0.043) but it is not installable
1 ibpulse-mainloop-glib0 : Depends: Lbpulse0 (= 1:13.99.1-1ubuntu3.13) but 1:15.99.1+dfss1-1ubuntu2.1 is to be installed
libsmbclient : Depends: samba-libs (= 2:4.15.13+dfsg-0ubuntu0.20.04.7) but 2:4.15.13+dfsg-0ubuntu1.5 is to be installed
Depends: libubcliento (= 2:4.15.13+dfsg-Oubuntu0.20.04.7) but 2:4.15.13+dfsg-Oubuntu1.5 is to be installed
software-properties-gtk : Depends: python3-software-properties (= 0.99.9.12) but 0.99.22.8 is to be installed
Recommends: gnome-keyring but it is not installable
ubuntu-desktop : Depends: gnome-shell but It is not installable
Recommends: deja-dup but it 1s not installable
Recommends: gnome-calendar but it is not installable
Recommends: gnome-keyring but it is not installable
Recommends: gnome-todo but it ls not installable
Recommends: libreoffice-style-breeze but it is not going to be installed
Recommends: network-manager-pptp-gnome but it is not installable
Recommends: orca but it is not Installable
Recommends: seahorse but it is not installable
Recommends: shotwell but it is not installable
ubuntu-desktop-minimal : Depends: gnome-shell but It is not installable
Recommends: gnome-keyring but it is not installable
Recommends: network-manager-pptp-gnome but it is not lnstallable
Recommends: orca but It is not installable
Recommends: seahorse but it is not installable
ubuntu-session : Depends: gnome-shell (>= 3.36.0-2ubuntu1*) but 1t is not nstallable
E: Unable to correct problems, you have held broken packages