Macro photography is an exciting genre. It can open up a whole new world. It is very fascinating to see things that are hard to see with the naked eye. Olympus has a very good lens for macro photography, Olympus M.Zuiko 60mm f2.8 macro.
Olympus also has another macro lens, the M.Zuiko 30mm f3.5 lens. I have made a video about that lens in December 2018.