I dreamed that a big lobster was holding its leg all the time, and I couldn't shake it off. Later, he pinched his hand, and I cut his leg with scissors and pliers before he let go.

Dreams are hard to say. Dreams may be related to what you have experienced recently, or it may be a knot in your heart, or it may be a longing for the future. First of all, your dream can't be about the future, after all, it's not very real. Knot is usually a retrospective dream, obviously you are not. This is probably related to what you have experienced recently, maybe it is your emotional problem. Of course, it may also be a puzzling dream. In fact, you should not care too much about dreams, it is useless to care, and don't use feudal superstitions to interpret dreams.