@ian doesnt work for me

Hi!
Already install ubports on my pixel 3a, and its realy get better now, i even wanna to try use it as my daily driver phone... BUT, then i try chill with some waydroid android app or another application i always take a look to status bar and i always wanna to hide it. Can i open some application in forced fullscreen mode, or can i forced hide a status bar? Or maybe i can launch some waydroid app in fullscreen mode? How can i do this, if it possible at that moment? Also, i wanna to try code some custom app for this OS. Where i can find documentation for it? Thanks.