Are you asking if the underfunded Russian military made mistakes in manning a ship, building a ship, designing a ship? Surely, it was meant to be rhetorical
Technically, the Russian military didn’t make any mistakes in designing or building that ship since it was inherited from the Soviet Union. Although make the mistake was having it still in operation…
Loading their capital ships decks with exposed, extremely large anti-ship missiles?
And they likely still would have been able to tow it back to port, if the weather hasn't been bad.