In dreams, the house usually represents your psychological and emotional state. Buying a house may represent your expectation and pursuit of some aspects, or it may mean that you face some important decisions in real life.
The poor attitude of the landlord may reflect your observation and feelings about the attitude of others in real life. This may be related to some challenges or unfriendly treatment in your interpersonal relationship.
In addition, the plot in the dream may be that your heart is reflecting some emotions and needs. You may be eager to gain recognition and respect from others, and some people or situations in real life let you down or get hurt.
In short, this is just a direction of interpretation and thinking. It is impossible to accurately interpret dreams, because everyone's dreams and psychological state are unique. If this dream has a strong emotion or influence on you, I suggest you communicate with a psychologist or counselor to understand your inner needs and feelings more comprehensively.