There are a few things that should be avoided when introducing a new cat .
Forcing your cat to interact immediately: new cats need time to adjust to their new environment and other pets. Forcing them to interact immediately can lead to stress and aggressive behavior.
Ignoring your cat's signals: if the new cat seems nervous or scared, don't ignore these signals. Give them space and time to adjust.
Ignore isolation: before introducing a new cat, it should be isolated from existing pets to reduce the risk of disease transmission and to allow them to grow accustomed to each other's scents.
Neglecting the cat's personality and habits: every cat has a unique personality and habits. Consider these factors when introducing a new cat and make sure the new environment meets their needs.