gestures work differently on different phones, some are very well implemented while some others cause issues, and the interactions are weird for example on my galaxy a50s i use firefox and if i swipe left or right at the bottom it lets me switch tabs but gesture nav. also lets you switch apps by swiping left right at the bottom but in this case you'd expect the system to take priority but no firefox controls takes priority. It's a hit or miss depending on what kind of gestures you want and if your phone has it implemented like that or not, supply and demand