> GParted was suggested in some of the results but it wasn’t installed by default on the distro I was recommended (Lubuntu

You got a less than stellar recommendation based on your desire for parity with ease of use with windows. Lubuntu is a more niche distro aimed at lower resource usage at the expense of the ease of use you are looking for.

If you had installed KDE, you'd likely have explored the start menu and found gparted or typed 'disk' into search and found gparted.