The problem isnt the grind, but a combination of the combat system and activities within Eureka to achieve your goal.

The combat system in this game is very slow and not fun, most of the fun comes from doing the mechanics as well as your rotation at the same time, its not made for endless mob grind, in Black Desert Online the mob grind fits because the combat is fast and action-based, as well as the fact that you can pull multiple adds and kill them all at once, it makes you feel powerful, in this game the combat system is too slow and monotonous for endless mob grinding to be fun and none of them have any good mechanics to speak of, the activities in there arent fun either and all revolve around this combat system which isnt made for endless mob grinding in the first place.

Either add actual fun activities to do, or reduce the grind massively, because right now, its too boring and monotonous.