please make this less formal and shorten it

Subject: Apology for Missing [Class/Meeting/Event] on [Date]

Dear [Teacher's Name],

I hope this message finds you well. I am writing to extend my sincere apologies for my absence from [class/meeting/event] on [date]. I understand the importance of attending regularly and participating fully in all academic activities, and I regret that I was unable to be present on that day.

The reason for my absence was [briefly explain the reason, if appropriate]. I understand that my absence may have caused inconvenience, and for that, I am truly sorry.
may you please make this less formal and shorten it?

I am committed to catching up on any missed work and ensuring that I stay up to date with the material covered during my absence. I will reach out to my classmates to obtain any notes or assignments that I may have missed.

I assure you that I am dedicated to maintaining my academic progress and will make every effort to prevent such absences in the future. Thank you for your understanding and consideration.

Sincerely, [Your Name]

Dear [Teacher's Name],

I'm really sorry I missed [class/meeting/event] on [date]. I know it's important to be there and participate, so I feel bad that I couldn't make it.

The reason I couldn't come was [briefly explain the reason, if appropriate]. I know it might have caused some inconvenience, and I apologize for that.

I'll do my best to catch up on anything I missed and stay up to date with the material. I'll reach out to my classmates for any notes or assignments I need.

I promise I'll work hard to prevent any more absences in the future and stay on track with my academic progress. Thanks for understanding.

Sincerely, [Your Name]