These problems can basically go directly to the hairdressing center for styling, which can be straight, slightly bent inward or bent to one side.
In addition to the above solutions, 3 and 4 can also be: after washing your hair, when hair seven is 80% dry, comb your hair in the direction you want, and then pull it up slightly, just blow it at the lower part of the hair root, not too dry, otherwise your hair will look stiff (you can't blow it at the scalp, otherwise it will be too soft or split).