People who like to walk with their heads down, if they are used to it, may have developed this crooked way of walking since childhood, and then kept their heads down.

If it is another case, it may be that your long-term autism or inferiority complex leads to your depression. It may have something to do with your own personality. You should be an introvert, and then you may not like to communicate with others. You only live in your own world, and you may be afraid to face others, so this is also a flaw in your character.