Why does my toddler hurt herself? She kind of hurt herself or hit her head with hands if we do something that she doesn't want?

A. Seats are very common behaviour of most of the kids that actually happens when we keep projecting their feelings or we keep saying no to them for everything so just to take that anger out or when they unable to express themselves or get what they want they often behave like this and sometimes it is basically just to draw your attention so try and comfort your child spend more time with your child and change the approach towards your child