Try hitting a shot with the clubface slightly closed at address. You should hit the ball straighter. Relax your arm pressure. If you are hooking the ball you must. . Do a better job of squaring the club face at impact.
Hooks can also come from a strong grip on the golf club which closes the face.
A hook can also come from the golf club traveling on an incorrect path. Grip and path are difficult to correct on the golf course, but you can change the club face. Try hitting a shot with the club face open at address. Do a better job of letting the golf club get to the bottom of the swing arc. Often we try to hit at the golf ball rather than swing the golf club.