Apple's #HIG would tell you (or used to at least) to not use bottom bars in your Mac apps... but apps suffer from usability if Bottom Bars are a good fit for them yet omitted…

I really don't like how bottom bars, title bars, and accessory were basically all merged into the toolbar -- especially when full height sidebars and inspector sidebars now eat so much into their horizontal space too. Everything fighting for room.

Here's more info on them...
https://marioaguzman.github.io/design/toolbarguidelines/#BottomBars