Here we go again!
ETA: He stands by the apology.
He did *not* say he stands by his apology, he avoided answering the direct question “Do you stand by the words of your apology?” by saying “I stand by who I am and why I made my apology”. You would never let Trump get away with this so you should be able to take your bias blinders off and see that here as well.
He very obviously, clearly, and intentionally does not stand by his apology. It’s clear as day to anyone willing to see it.
(All he needed to say was “yes”.)