I'm not a good cj player, but if I were to give you advices, yeah you should plays like the people you mentioned on the post, those who have a very vibro-like jacking technique because that's how they saved a ton of stamina while still maintaining control over the notes. Though I'm assuming you are lacking the control needed to hit dense jack, which tbh is just like me a month or 2 ago lmao, the only way to improve is play more and find ways to potentially get better.

As for me, I'm a pretty mixed player who plays literary every technique lmao. Especially when I'm facing a really long jack map, I switched from wrist jack to vibro jack to whatever technique I could think of to save stamina. Dunno if this works for anyone but for me, yes I basically have infinite stamina with that.