Dwarf World Hygiea during the asteroid belt also has no moon. Nevertheless, many smaller sized asteroids (also referred to as insignificant planets) do have moons, but They can be all as well faint to discover in any novice telescope. Kerberos was identified in 2011, and Styx was present in 2012, https://messiahnpppn.nizarblog.com/34892989/the-2-minute-rule-for-best-moons