The original Sailor Moon anime has several filler episodes. The first few seasons especially have many scenes and plot arcs that aren't present in the manga, which is markedly more streamlined in plot. The original Sailor Moon also has a few movies and some draw from short stories in the manga, but most have plots that act as interludes and don't really affect the main story lines.
Source：https://www.cbr.com/best-sailor-moon-filler-arcs/
