Could you show me some examples of sentences using pronouns desribing a recent interaction with a friend or family member about personal finance or credit cards.

I believe you are supposed to write your own sentences.

Once you have written them, be sure to post them if you would like someone here to give you feedback.

Personal pronouns
I, me, my, mine; we, us, our, ours; you, your, yours; he, him, his; she, her, hers; they, them, their, theirs.