If you have a soft jaw curve and no evident lines or angles, you have a round face shape. For this one, the best style is the one that will create angles and give your face more definition. A side cut, for example, can help you to keep the sides short and build your own structure.
Just like a triangle, this face shape grows from a narrow forehead to a wide jawline. Volume is key here so, if this is your face type, make sure to choose thicker, longer, and fuller hairstyles. The length you add on the sides will lower the pointy effect of your head. Also, try to avoid beards since your chin already looks wide.