-——Did it have a self destruct?——
Can’t say for sure but there was an explosion just before it hit the ground and the big boom secondary with all the fuel.
I take that to be the selfdestruct implementation.
I have seen comments on other forums saying the Russians don’t use destruct. They cut off the engines. But only after a certain amount of time, so that, hopefully, the rocket has cleared the pad and is away from people.