I think that's pretty weak from a Dark Lord of the Sith.
The non canon DS ending is even worse
What the heck is that? It's just disgusting to hear from any Sith, not to say a Dark Lord of the Sith.
So? Lots of Sith probably sound pathetic when defeated. Palpatine's last words were "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAGH"
Or to use the opposite extreme as Malak, It's not as if
Plus Malak wasn't wrong, even before the fight he complains that "fate and destiny, have conspired to keep you alive Revan."