I’ve got some micro 4/3 cameras (the kind that the one you’re looking at is) and entirely too many lens so I guess this is my ballpark
Am I an expert? Hell no
Do I have a couple years of hobby experience? Yes.
So let’s get started
My favorite general purpose lens is my Panasonic Leica 12mm to 60mm lens. It goes down to f/2.8 and has a wide spread of focal lengths to use that work great. It’s expensive though. The Panasonic (non-Leica) 12-60 is a pretty decent alternative for a lot cheaper. Usually about half the cost or less of the Leica one.
My favorite non-zoom powered lens native to micro 4/3 is the 25mm f/1.7 lens from Panasonic as well. It’s bloody sharp and a great general purpose lens if you don’t mind having to change your distance to a subject.
Now in terms of manual lenses I have a pair of favorites, one that’s expensive and easy to get and the other that’s old and hard to find. The expensive one (like $400 USD) is my 7.5mm f/2.0 lens from laowa. It’s a really specific use case lens but it’s damn good at what it does, which for me is wide astrophotography shots. The hard to find one is an old Soviet projector lens made for 16mm film. It’s a 50mm f/1.2 lens. It’s fantastic and takes some really unique shots. I paid like $90 USD for it.
If you have any more questions feel free to ask, I’ll happily answer.