Can you provide two examples of situations or conversations in which you found it hard to trust someone's words? And if possible for each example, specify what

Can you provide two examples of situations or conversations in which you found it hard to trust someone's words? And if possible for each example, specify what made you mistrust them, and what would have made you trust them. On the opposite side of the spectrum, do you have two examples of situations in which it was easy for you to trust someone's words? What made you trust them?