On a more technical/playstyle level, I know that, when I first played Dark Souls 1, I was all about turtling and creeping around corners with my shield up. When I ditched it in later playthroughs, I felt naked at first, but as I grew more used to it, there was such a greater sense of mobility and freedom. Greater risk, yes - I could hang back to learn a boss's patterns, but sooner or later, I was going to have to throw myself into that dance and start dodging. But it also felt so much more dynamic and graceful and aggressive. I don't know if this is what you're doing with your DEX/FAI build, but might playing without a shield in something like Dark Souls 3 help you practise for the generally more aggressive combat of Bloodborne?
Oh, I've stopped using a shield since my first STR run since it's useless outside of parrying Pontiff and maybe blocking during the second half of Dragonslayer Armor fight (that shield bash comes out
fast). Two-hand Ultra Greatsword for that extra damage. In my DEX/FAI build, I use Uchigatana so I can buff with Dark Blade, then two-hand, go into hold stance and parry. It's been a blast, might go get Black Blade katana and go all-in on this build.
I'll admit, this really doesn't make sense to me. Not meaning to disrespect your feelings at all, but is the point of playing these games to be the best that ever was? In that case, only one person, or at most a tiny handful of people, would be worthy of them. The point, to me, is just to experience these worlds and challenges for yourself, and find your own ways of overcoming them, and enjoy the sense of triumph that comes with that.
Oh, this is one of my hang-ups I admit is very irrational. It's hard to explain since this is due to self-esteem issues. Even when beating Father G, I felt I didn't deserve to continue playing since 1) I played so badly, and 2) my play style when panicked (backwards rolling in a Soulsborne game, heurgh) is at odds with BB wanting you to throw yourself into the fight. Best I can describe it is not so much cowardice (though the cynical me is not opposed to being called such) as it is overcautiousness which I never experienced in Sekiro. I don't know why I feel so scared playing Bloodborne, which makes me so cautious which is not how Bloodborne is meant to be played.
Besides, I'm not a good player, and even if I were, anyone else could do it given enough time, so whatever I accomplished wasn't even that special anyway.