After two interviews at same company,.. I'll just cut to the email and my response to them..

Company X: "...blah blah blaaah, sorry but unfortunately, we decided to move forward with a candidate that we see fit for this role. Thank you for your interest and interviewing at X company."

My reply: "....don't be sorry. Fortunately, I have already accepted an offer where I see my skills fit at an even higher level at a company."

I was lying. I didn't have an offer yet. Just had to let them feel a little regret. 😂😁