mobile

Hello, I have a simple question that can be asked calmly and politely and I do not require or ,ask for or expect any rude or such matter, backlash for this question but I am asking if there is a mod or work around or module to get the side key panel and reduced screen size on the Galaxy Note 4 Snapdragon at the same time. Why do I ask this? Because when I am using my nondominant hand and are laying down I have experienced having to yet again pull my finger all the way down to the bottom of the screen to press any sort of software/hardware key button. Please answer responsively and respectively as I am only 15 years old but I am acutely aware of my knowledge around Android so do not test to me. :)