Need some gears help Spoilers Ahead end of game

I’m figthing skorge and I’m pounding the B button as fast and hard as possible I can usually break his chainsaw in half on the very first battle, but the second one no matter how hard and fast I pound he flips me and chains me. I keep hearing it’s easy to beat him, but I’m breaking my hand trying to fight him.

Sounds strange. I’ve gone through that scene twice, and the second button mash was as easy as the first.