The archaeological/anthropological sense of "ritual" is more about a behavior being performed consistently and commonly than it is about attempting to describe

The archaeological/anthropological sense of "ritual" is more about a behavior being performed consistently and commonly than it is about attempting to describe an belief system underlying behavior (or even if one exists at all). My culture has quite a few rituals; I'm indeed engaging in one (eating a meal and some drinks in a communal space at a long table) right now :)