Sekiro

I somehow reach second phase and die each time. I mostly heard she took people 5-10 tries on average (I think) and my last try being more than 50th, should I just quit the game already? I know I can defeat her at some point, but just the fact that there are going to be harder bosses than her makes me question this. SoulsBornes were never really for me because of their punishing natures, but this one seems like the one I got the most further into because of the visuals and aesthetic. So far I've defeated only Gyoubo which I'm sure took me around 20-25 tries.Another question actually: Is it even possible to kill her without controller on pc?

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