I take full responsibility for my actions. Please accept my heartfelt apology.
Words cannot express how sorry I am. I hope you can forgive me.
I apologize for my behavior. Your understanding means everything to me.
Regretting my actions and seeking your forgiveness. I'm sorry.
Acknowledging my mistake and expressing sincere regret. I hope you can forgive me.
Apologizing is the first step to healing. I am truly sorry for any pain I've caused.