If you’re late to something should you say, “I’m sorry for being late” or...?

“Thank you for waiting” 
Which is more proper?

18 gibbs 202021-04-07T20:47:10Z

I'm sorry for being Kate.  Thank you for waiting.  say Both.

?2021-04-07T20:39:36Z

Both are correct...stating them in the order you presented is even better.

Did you at least bring donuts?  That would erase the faux pas.