How do you say sorry for not coming?

How do you say sorry for not coming?

If you accepted an invitation but then did not attend the event, saying “I apologize for not coming” would be appropriate. However, if you are simply declining an invitation, that is not normally considered an offense, so the verb “regret” is traditional: “I regret I'll be unable to attend.”

What is the meaning of don’t be sorry?

“Don't be sorry” probably doesn't mean “don't worry about it.” The implication is, “saying sorry isn't enough.” This might mean that they are hurt more deeply than they're letting on. They have lost some kind of trust in you because of the thing you've done that triggered them in the first place.

Which is correct to me or for me?

Here both can be used, but they would have slightly different meanings: "To me" means that you're the one who cares about it, while "for me" doesn't necessarily mean that it's important to you – it could be that it's important because of somebody else.