You can configure and change its look and feel as you want.
Luckily, you can highly customize Ubuntu and its GNOME desktop. Ubuntu 18.04 comes with the theme that mimics Unity, but it is less functional than Unity. There are several variants for the desktop environment like. Search more than 600,000 icons for Web & Desktop here. Ubuntu+kali+mac os Icons - Download 360 Free Ubuntu+kali+mac os icons IconArchive.