There are many unscientific explanations about dreams, but most of them are groundless.
Many people look up the so-called dream interpretation book, which is called "mechanical idealism" (a word I coined), and even idealism is inferior.
For your dream, my current explanation is as follows:
It may be the impression left by your childhood family life environment, and it does not rule out the psychological oppression caused by your living space in recent years or now.
In other words, when you were a child, your home housing area was small. When you were young, you probably slept in the same bed with your parents all the time. When I was a little sensible, I didn't separate the bed, which produced a feeling of "crowding".
Another possibility is that when I was a teenager, I felt that I lacked personal living space. For example, it is sometimes inconvenient to live in a student dormitory and have several people in one room. Going to the toilet is official, so I'm not used to it. Some things are difficult to deal with, especially when someone comes in.
For another example, there are not many rooms at home, and there are no single rooms and independent beds. Or share the house, kitchen and bathroom with others.
Thus, through the tortuous transformation, dreams such as "getting stuck" and "finding a hidden place" appeared.
Because I don't know your specific situation, the above is just speculation. Not necessarily accurate. For reference only. An old man in Jinling