I can give you some dream analysis, but it is for reference only.
Mud may be a mysterious and dark thing that fascinates you, and it is often related to depravity. Stepping on your feet means that you have started to sink in, but there is still a chance to get out. I don't know what your mood was when you dreamed of stepping on the mud, and I can't be sure of your true attitude towards it (in fact, there is no pain and psychological activity in your dream, on the contrary, everything you feel in your dream is very real, but it's hard to remember that feeling after waking up)
for reference only