First of all, I think if the face is thin, I suggest that you keep long hair, because it can be tied up when you keep long hair, which will make people look more energetic. Besides, our faces will be big enough. If you choose fluffy short hair, your face will look smaller. In fact, many people will say that being small is a very good thing, but if there is a serious imbalance, I don't think it is the embodiment of beauty, so I am still relative. I suggest that you have long hair, tie your hair and catch your ponytail, which is a very good choice.
Secondly, I think it's good to keep a short and handsome hairstyle, but don't choose a more rigid and neat hairstyle, because a more neat hairstyle will make our faces smaller when scattered, but choosing some hairstyles with different lengths will make our overall face or outline more three-dimensional, and I find that many faces become smaller in life, but this is true when choosing some hairstyles with different lengths.
Finally, I think it is not recommended to choose a hairstyle with bangs if the face is thin, because when there are bangs, it will appear that we have an overall effect of being wide at the top and narrow at the bottom. This effect is not very beautiful, so we must consider it clearly. Try your hairstyle boldly. Try some styles you haven't tried before, and you will find the hairstyle that suits you best. Never imprison yourself because of fear and give up trying.