Starting to go off topic but have you checked out BetterTouchTool[1]? It's not _just_ another window tiling app for the Mac. It also lets you conveniently remap trackpad gestures and taps, 3rd party mice (yes you can remap your side buttons if you want), keyboard shortcuts, etc. The coolest thing is that if you really want, you can also restrict your remaps to work only in certain applications. I've been using it for years and just wanted to share.
[1]: https://www.boastr.net