請幫忙轉為英文

I am terribly sorry that I could not attend your interview as I have already accepted an offer from another company. I am sorry for the inconvenience caused.

「真的不好意思, 我不能出席 interview, 因為我已答應了另一公司的聘請」
Regret that I'm not able to attend the interview since I'm employed by another firm.

I am sorry that I cannot attend the interview because I have already accepted the offer by another company.

I ( am so sorry that/ feel embarrassed ) I can't attend the interview, because I have promised the invite of another company already.

My apologies for not attending your interview due to the fact that I have accepted the offer from another company.

Is really embarrassed, I cannot attend interview, because I complied
another company's invitation