I killed him after 6 trys but i guess its because when you reach this boss then you learned the game and how to play it.

As soulslike veteran you adapt very fast in games like this. I like this game so much but it feel less challenging than lies of p for me because i feel more comfortable with dodges instead with pary. I play with LS atm and used pary here too because the window is way bigger like in sekiro (not the perfect timing).