Golfers need to be consistent with where the bottom of their swing contacts the ground, which is why the feedback from your divots is so important to developing a sound golf swing
The arms work very differently in the swing, with the left arm staying straight up to the release and the right arm bending early, use this two club drill to get the feel of the proper motion of the arms working together
If your ball is in a fairway divot you need to adjust your swing so that you hit the ball with a more descending blow