1. The right leg is bitten by a snake-snakes usually bite the ankle, but the dreamer is bitten by the right leg, not the right foot. If it's just a sign of habit, there's nothing to say. If not, it may be related to the dreamer's recent emotional relationship. Whether the dreamer has a complicated relationship with a certain opposite sex recently.
2. I can't get a taxi on the way to the hospital-hitchhiking is a social communication ability (I often take a taxi when I go out to play with my friends), so the dreamer wants to get someone's understanding and help after encountering problems, but he has less personality and not enough friends, and he doesn't know how to get everyone's help and care.
3. I met a car accident while waiting for the bus —————— This can be seen as the dream owner's inner resistance to exposing himself and showing it to everyone, and it also reflects the dream owner's idea of "is there anyone who can help me?"
Scientific dream interpretation requires interaction with the dreamer and private conversation when necessary.