According to Freud's theory, snakes symbolize men's sexual organs. You should pay attention to this, it's hard to say more, you can understand it yourself.
Duke Zhou: Dreaming that he was bitten by a snake means that he is not afraid of danger and will be lucky and have a rich life.
From a practical point of view: there may be a lot of troubles bothering you recently, so that your inner troubles cannot be solved.
The above points are for your reference.
Last sentence: Good luck!