i am an working scholar and i have so many lates in my working shift and our department head needs an explanation letter can you make one for me?

Dear [Department Head], I apologize for the several times I was late to my working shifts. I acknowledge that my lateness was inappropriate and that it put an undue burden on you and my coworkers, and that my behavior has been unprofessional. I am working hard to ensure that this doesn't happen again. I have considered what caused me to be late and have taken steps to rectify the problem. I understand how important punctuality is to the proper functioning of our department and am taking steps to ensure I am on time from now on. Once again, I apologize for my behavior and I have learned from this experience. I am committed to being punctual and to meeting the goals of our department in a timely manner. Thank you for your understanding. Sincerely, [Your Name]