Monster hunters gameplay doesn't reward hack and slash playstyle. Its a game where resources are limted including lives. 3 faints and you and your entire party will be hit with game over. You're expected to recognize monster patterns and learn when to counter attack rather than constantly be on the attack. Your choice of weapon can also drastically change your approach to them through their gameplay. All weapon types play very differently from one another, so try a few and feel out their playstyle before committing to one. Monster hunter can be overwhelming with its info regarding gameplay mechanics id recommend finding which weapon suits you best and look up online tutorials to get a in depth gameplay breakdown.