Sorry as it keeps losing my keybindings, a screenshot's a bit of work.
I'm also playing on Stadia with a controller, which I've found to be a better experience.
On my Macbook, I bound:
Z: rotate camera
' (quote): quick save
unbound quick load because I hate it when I bump that
,: zoom out
.: zoom in
Also in OS X I have single tap to click, 3 finger pan, 2 finger zoom all enabled which works intuitively in game.
Compared to my Windows PC with mouse (w/ Divinity), though, Mac with touchpad is awkward.