I am writing to apologize for my inexcusable behavior of vandalism. I understand that my actions have caused you distress, and I am deeply sorry for that.
I understand that my actions were wrong and I regret them deeply. I take full responsibility for my actions and realize that I have caused a great deal of damage. I can only imagine how much time and effort you have put into restoring the damage I have done.
I want to make it clear that my actions were not motivated by malice or hatred. I was frustrated and acted out of emotion. I realize that this does not excuse my behavior, and I am truly sorry for the pain I have caused.
I am willing to do whatever it takes to make up for the damage I have caused. I am willing to help with the repairs, or provide compensation for the cost of repairs. I am also willing to perform community service or any other form of restitution that you may deem necessary.
Once again, I am deeply sorry for my actions and the damage I have caused. I understand that my apology cannot undo the damage I have done, but I hope that it can help to restore your trust in me.