I am making my way through Yakuza series right now and while playing 5 I realized that I am not that invested into the game’s combat, so I turned it to easy and that just streamlined the combat so much for me. I would recommend to maybe try Yakuza 0 on normal at first and then just switch it to easy if you feel like the gameplay might be dragging on.
And once the game has become a breeze, with 100% of your runs being a success, install the Captain’s Edition mod and suddenly, it’s a pleasantly challenging title again. The add-on that turns it into an endless game in particular is so good, I spent dozens of hours playing it.