Just got back from 2 chapters AFK, questions.

First of all the UI changed alot, the battlepass reward arnt linear anymore i supposed? Also Team Rumble is not the best place to do quests anymore for xp gain since the cloud shrinks right away, is there any other mode for doing quests except joining actual BR? Or any other gamemode/Creative i should be playing for xp? Mainly for quests grind or xp grind, I dont have that much time since i just had a kid. I am sorry if this has been asked countless times.