I just added my like to this feature request. As a suggestion, I believe iOS apps can make use of EDGE swipes for certain actions. Example, some apps let you open a menu/sidebar by swiping from the far left/right edges, while swiping from somewhere in the middle lets you navigate forward/back, or vice versa. This would be ideal, as you’d be able to do all of these actions with one finger, without even having to deal with user preferences.
@PitchPowerBank, I wonder if it might help attract more attention if you add more descriptive language to the title of this thread, i.e. “One finger swiping for navigating forward/back.”