Crew dying too fast on cruiser

is it normal to loose 20 to 30% of a crew when you get no signifiant damage at all i loose plane catapult and a chemney and lost 20% on the new orlean on the fargo 30% from a graf spee that did literally no damge by hitting upper rear deck how is that posssible just how

il’l add that a destroyer shooting at me make me loose 10% per shot while damaging nothing

You are most likely getting hit in your internal crew compartments. Every blue water and some larger coastal vessels have internal crew compartments spread across the ship.

You cannot see how much damage these compartments have taken on your own ship during a battle.