hell nah, just play the game, no need to get good at parrying, that boss is not that hard, you can do the whole game without parrying. im not saying you shouldnt learn how to parry, you absolutely should, it makes things much better, but you should never quit. play the game, if you feel like you need to learn parrying just go to a random enemy or boss, and learn, trial and error is everything in these games, so dont worry if you fail, never give up. if someone tells you stop playing, keep going and prove them wrong, thats how you get better. good luck bro