What is oral sex dynamics in your relationships? What if your partner doesn't have much interest in it But it is "must have" act for you?

Dear fellow Men, I want to ask two honest questions:

1. Do you actually enjoy giving oral sex, or do you only do it to please your partner?

2. If you do it just to please your partner or you may love giving oral pleasure to your partner but at the same time, your partner does not want to return it. does it make you feel frustrated?

Please share your honest thoughts. Do you openly share your perspective and your wish with your partner? How do u communicate this?