Default Aosp navbar style on stock lg 4.4.2 rom

Is anyway that I can replace the menu button with a recent button and get all my apps to do like aosp rooms where when you open an app you get a menu button come on?

And I'm rooted fyi . Everything I've used ie g2xposed and g2 tweakbox to change to have back home recent setup I don't get the little menu button,have to make a long press for menu or 4th button and don't care for either..