LineageOS has a left/right hand mode. Basically the screen gets resized to about 75% of the size, with the top right (for left hand mode) or top left (for right

LineageOS has a left/right hand mode. Basically the screen gets resized to about 75% of the size, with the top right (for left hand mode) or top left (for right hand mode) becoming black. It can be activated by swiping from left to right / right to left on the bottom bar.