Stand closer to the ball
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I've seen multiple posts or videos that suggest you should have a small draw on your shots. Almost none of mine do, they fly more or less straight. The exceptions are my 3 and 4 iron, for some reason they have a nice little draw on them eventhough I don't feel like I do anything different from the other irons.
As far as a narrow, upright stance... my only guess is this is forcing you to come in steeper at the ball and you're getting the clubface squared. If you stand back you end up reaching at the ball during your swing and yank it hook-style
Otner things in line. A closer stance also allows for easier hip turn/rotation . Sound to me tnis is what is happening , or atleast part or it. Did you notice the ball flying higher ?
I'm with saevel25. You don't want to be reaching but you don't want to be crowded either, every player needs to find what works for them so it's pretty hard for anyone to give you anything definitive beyond that.
As for a narrower stance, I favor a stance that's a little more narrow than most as I find it makes it easier to transfer my weight properly but again I think this is something that depends on an individuals swing, body type and tendencies.