1) dunno what you mean by Youtube vanced
2) you can move apps wherever you want; hold down app icon and drag to wherever you want to put app including the bottom of the screen (4-5 apps max); apple/ios also has widgets now for many apps which can be sized
3) swipe left to end of app pages to access full app library
4) screen calling/filter settings are in the settings > phone
5) dont know what this is
6) missing from iphones
7) change ringer volume using toggles on side WITHOUT media playing; change volume setting for media WHILE media is playing; change alarm volume in the alarm settings app while setting alarm
unsure if timers are saved.
9) swiping right can sometimes be used as back button); there is usually a back button or icon somewhere on the page to indicate going back.