I was terminated from my job for using a derogatory word. In the letter, please

I was terminated from my job for using a derogatory word. In the letter, please include the following.
1. First apologize for my actions and admit my mistake.
2. How much I love and appreciate my job as a social worker.
3. Remedies to prevent from happening again.
4. Ask for a date to meet to explain if possible.