[filchermcurr]

I think I can help you with a couple of those things if you're interested!

You can remap the keyboard shortcuts in macOS easily. Go to System Settings - Keyboard - Keyboard Shortcuts. The one you specifically mentioned for WIN + E is in the Spotlight section under 'Show Finder search window'. Double-click on the key chord shown and type in what you'd prefer. (Incidentally, the Finder search window is atrocious and I hate everything about it. But I get wanting a shortcut to just open Finder in general.) Another neat thing you can do here is assign keyboard shortcuts to any menu item in any application.

You might also look into BetterTouchTool for gestures, keyboard shortcuts, and a billion other things. One option BTT provides is inverting the scrolling for the mouse only. It's a quick and easy checkbox in the prefer-- settings.

Parallels is good and all, but I personally use VMWare Fusion. It's free and I've not had any issues with it that would compel me to pay a subscription for Parallels.