in my thread i detail how to install a new DE such as Gnome. Yes, it is possible. Note, that the default LXDE image from Clockwork Pi is based off of Debian 11, so the Gnome version will be old. Besides that, its Gnome! Perhaps you can find a way to install a newer version with bookworm-backports as i’ve been able to install newer packages that way when i added the backports repository.