[AutotelicBrown]

Grinding is rather vague as both RNG and skill requirements lead you to grind anyway. I'm assuming you mean grinding when the outcome only factors in time spent.

For me, different combinations of all three have their place at different times. I tend to prefer activities* that focus on only one at a time though. Some examples would be 100% rng juice with friends for randomness, gathering skills to relax on old school runescape (OSRS) for grinding, and stepping manias for skill. Mixing some dose of predictable RNG (i.e., enough so you don't have to rely on outliers to achieve anything) in the other two categories is fine as well.

*Not games, something like runescape is an extreme example where you can focus on completely different things at a given time.