OK. I'm sure that there's tons of Military Commentators running around here who probably know lots more than I do about naval operations. Maybe.
But, by gum, I spent 6 years in the USN, three of those floating around on an aircraft carrier.
So, looking at those videos: It looks like the sailors are shooting some kind of machine gun/guns at the drones, and as badly aimed as those machine guns are, no wonder they weren't taking out the drone boats. It kind of has the look of somebody shooting with a tommy gun, i.e., handheld. But, having said that:
There was a 5" blasted naval gun on the forepart of that ship, and that ship was under attack. Why the heck wasn't there somebody running that turret and blasting the heck out of the drones? Yes, it's a missile corvette, which is a cut-down destroyer. But a 5" gun like that is there for a reason.
For that matter - it's a corvette. For a displacement hull, those things are supposed to be high speed and highly maneuverable. What, no dodging?
What is it - the ship was anchored out there with minimal crew while everybody else was ashore, partying and getting drunk?