这句话应该是I want to say sorry to...
或者XXX make an apology to XXX
I must apologise for +道歉的事情
如:I must apologize for not being able to meet you.
我因为没能接你而向你道歉.
apologize to sb for sth : 因某事向某人道歉
I am sorry for doing sth
I am sorry for sth
say sorry to sb. for doing sth.
apologize to sb. for doing sth.
This song is for xxx. I'd like to say I'm sorry
这样应该没有问题吧