Nah Sekiro is great. Sometimes I just pull it up and play it a couple of days because it’s so satisfying. I think Sword Saint Isshin is supposed to be the hardest boss, and it definitely takes a lot of runs until you have him memorized. But on NG+ I first-, or second-tried him. I think all Sekiro bosses are pretty chill once you know them.
Consort Radahn however… I don’t know if I have the will to ever struggle through this fight again