never mastering the combat, you might as well not bother.
Honestly, mastering FS's combat (especially souls series) is mostly about memorizing which grunts and twitches every single enemy in the game makes so you can time your parry/dodge perfectly. I'm sure that's satisfying to some people, but it's not something I think is worth pursuing.
Improving general competence, by understanding things like the mechanics of poise, blocking, ailments, counter hits and so forth- sure, that's satisfying and worthwhile, and will make the game more engaging while making it easier as well.
But getting to the point you can no-hit a boss because you've learned it so well is dumb- the combat isn't deep or balanced enough to warrant that, unlike in something like Monster Hunter or a fighting game. Reducing the game to a QTE by memorizing everything the enemies do is retarded. Lategame and most multi enemy bosses in ER in particular absolutely deserve to be gang-banged with summons, and I say this as someone who stubbornly soloed through everything except Malenia. A lot of these fights are just straight up bad- forcing you to backpedal for more than half the fight while waiting for a particular attack to punish, rather than actually engaging with the boss actively. The biggest thing many of them have going for them is spectacle if you let them sit around and use all their coolest moves.
Also note that people that are 'good' at the game (challenge runners and such) generally cheese through the combat anyways- they just do it by stacking so many temporary buffs the fight is over in 10 seconds before the boss can even use 90% of it's moveset. Explain to me how that is any more satisfying than tag teaming a boss you actually have to chip away at and pay attention to for a couple minutes.