Quoted By:
>battle tree
>battle agency
>wormhole
>several social quests
>levelling up festival plaza
>postgame poni island areas
>post game events like the gladion one in usum
>getting everything in poke pelago
>postgame chapter
>literally every area you go to postgame likely has a special event
>getting cosmog, type null, porygon, tapus, zygarde, etc
>totem stickers
>mantine surf
>route masters
you didnt look for any post game